/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-57.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:10:53,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:10:53,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:10:53,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:10:53,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:10:53,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:10:53,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:10:53,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:10:53,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:10:53,874 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:10:53,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:10:53,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:10:53,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:10:53,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:10:53,876 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:10:53,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:10:53,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:10:53,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:10:53,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:10:53,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:10:53,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:10:53,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:10:53,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:10:53,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:10:53,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:10:53,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:10:53,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:10:53,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:10:53,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:10:53,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:10:53,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:10:53,881 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:10:54,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:10:54,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:10:54,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:10:54,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:10:54,102 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:10:54,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-57.i [2023-12-15 21:10:55,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:10:55,382 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:10:55,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-57.i [2023-12-15 21:10:55,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a1bedb9/dd64f830ecb34116b9e2c9746aef10c5/FLAG616e1801b [2023-12-15 21:10:55,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65a1bedb9/dd64f830ecb34116b9e2c9746aef10c5 [2023-12-15 21:10:55,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:10:55,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:10:55,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:10:55,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:10:55,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:10:55,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13879e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55, skipping insertion in model container [2023-12-15 21:10:55,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:10:55,574 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-57.i[916,929] [2023-12-15 21:10:55,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:10:55,679 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:10:55,691 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-57.i[916,929] [2023-12-15 21:10:55,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:10:55,743 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:10:55,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55 WrapperNode [2023-12-15 21:10:55,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:10:55,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:10:55,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:10:55,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:10:55,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,798 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 519 [2023-12-15 21:10:55,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:10:55,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:10:55,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:10:55,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:10:55,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,834 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:10:55,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:10:55,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:10:55,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:10:55,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:10:55,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (1/1) ... [2023-12-15 21:10:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:10:55,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:55,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:10:55,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:10:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:10:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:10:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:10:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:10:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:10:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:10:56,039 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:10:56,040 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:10:56,626 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:10:56,669 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:10:56,669 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:10:56,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:10:56 BoogieIcfgContainer [2023-12-15 21:10:56,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:10:56,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:10:56,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:10:56,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:10:56,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:10:55" (1/3) ... [2023-12-15 21:10:56,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fcf9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:10:56, skipping insertion in model container [2023-12-15 21:10:56,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:10:55" (2/3) ... [2023-12-15 21:10:56,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fcf9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:10:56, skipping insertion in model container [2023-12-15 21:10:56,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:10:56" (3/3) ... [2023-12-15 21:10:56,677 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-57.i [2023-12-15 21:10:56,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:10:56,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:10:56,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:10:56,731 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;@4407b6ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:10:56,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:10:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 144 states have (on average 1.5625) internal successors, (225), 145 states have internal predecessors, (225), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-15 21:10:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-15 21:10:56,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:56,758 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:10:56,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:56,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1076945560, now seen corresponding path program 1 times [2023-12-15 21:10:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:56,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386471967] [2023-12-15 21:10:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386471967] [2023-12-15 21:10:57,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:10:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471955197] [2023-12-15 21:10:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:57,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:57,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:57,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:57,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:10:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:57,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:10:57,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2023-12-15 21:10:57,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:10:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471955197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:10:57,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:10:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:10:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891429549] [2023-12-15 21:10:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:10:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:10:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:10:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:10:57,443 INFO L87 Difference]: Start difference. First operand has 202 states, 144 states have (on average 1.5625) internal successors, (225), 145 states have internal predecessors, (225), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-15 21:10:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:57,500 INFO L93 Difference]: Finished difference Result 401 states and 723 transitions. [2023-12-15 21:10:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:10:57,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 358 [2023-12-15 21:10:57,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:57,513 INFO L225 Difference]: With dead ends: 401 [2023-12-15 21:10:57,513 INFO L226 Difference]: Without dead ends: 200 [2023-12-15 21:10:57,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:10:57,526 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:57,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 327 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:10:57,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-15 21:10:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-12-15 21:10:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 143 states have (on average 1.5384615384615385) internal successors, (220), 143 states have internal predecessors, (220), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-15 21:10:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 330 transitions. [2023-12-15 21:10:57,577 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 330 transitions. Word has length 358 [2023-12-15 21:10:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:57,578 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 330 transitions. [2023-12-15 21:10:57,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-15 21:10:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 330 transitions. [2023-12-15 21:10:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-15 21:10:57,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:57,591 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:10:57,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:10:57,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:57,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash -564612338, now seen corresponding path program 1 times [2023-12-15 21:10:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808324406] [2023-12-15 21:10:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:57,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:57,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224511356] [2023-12-15 21:10:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:57,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:57,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:57,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:57,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:10:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:58,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:10:58,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:10:58,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:10:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808324406] [2023-12-15 21:10:58,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224511356] [2023-12-15 21:10:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224511356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:10:58,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:10:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:10:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423363441] [2023-12-15 21:10:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:10:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:10:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:10:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:10:58,287 INFO L87 Difference]: Start difference. First operand 200 states and 330 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:10:58,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:58,739 INFO L93 Difference]: Finished difference Result 797 states and 1317 transitions. [2023-12-15 21:10:58,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:10:58,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 358 [2023-12-15 21:10:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:58,744 INFO L225 Difference]: With dead ends: 797 [2023-12-15 21:10:58,744 INFO L226 Difference]: Without dead ends: 598 [2023-12-15 21:10:58,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:10:58,746 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 796 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:58,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 954 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:10:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-15 21:10:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 457. [2023-12-15 21:10:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 344 states have (on average 1.5901162790697674) internal successors, (547), 344 states have internal predecessors, (547), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-15 21:10:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 767 transitions. [2023-12-15 21:10:58,804 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 767 transitions. Word has length 358 [2023-12-15 21:10:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:58,805 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 767 transitions. [2023-12-15 21:10:58,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:10:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 767 transitions. [2023-12-15 21:10:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-15 21:10:58,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:58,809 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:10:58,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:59,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:10:59,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:59,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -348702555, now seen corresponding path program 1 times [2023-12-15 21:10:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74601941] [2023-12-15 21:10:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:59,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73041104] [2023-12-15 21:10:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:59,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:59,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:59,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:10:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:59,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:10:59,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:10:59,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:10:59,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74601941] [2023-12-15 21:10:59,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73041104] [2023-12-15 21:10:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73041104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:10:59,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:10:59,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:10:59,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621209189] [2023-12-15 21:10:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:10:59,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:10:59,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:59,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:10:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:10:59,351 INFO L87 Difference]: Start difference. First operand 457 states and 767 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:10:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:59,675 INFO L93 Difference]: Finished difference Result 1446 states and 2402 transitions. [2023-12-15 21:10:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:10:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 359 [2023-12-15 21:10:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:59,682 INFO L225 Difference]: With dead ends: 1446 [2023-12-15 21:10:59,682 INFO L226 Difference]: Without dead ends: 990 [2023-12-15 21:10:59,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:10:59,685 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 619 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1167 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:10:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-15 21:10:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 849. [2023-12-15 21:10:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 624 states have (on average 1.5592948717948718) internal successors, (973), 624 states have internal predecessors, (973), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-15 21:10:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1413 transitions. [2023-12-15 21:10:59,740 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1413 transitions. Word has length 359 [2023-12-15 21:10:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:59,741 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1413 transitions. [2023-12-15 21:10:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:10:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1413 transitions. [2023-12-15 21:10:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-15 21:10:59,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:59,745 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:10:59,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:59,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:59,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:59,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1937050457, now seen corresponding path program 1 times [2023-12-15 21:10:59,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:59,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138961671] [2023-12-15 21:10:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:59,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:59,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:59,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206636689] [2023-12-15 21:10:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:59,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:59,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:59,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:00,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:11:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:00,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:00,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 474 proven. 156 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2023-12-15 21:11:00,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-15 21:11:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138961671] [2023-12-15 21:11:00,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206636689] [2023-12-15 21:11:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206636689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:00,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876907724] [2023-12-15 21:11:00,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:00,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:00,829 INFO L87 Difference]: Start difference. First operand 849 states and 1413 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-15 21:11:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:01,136 INFO L93 Difference]: Finished difference Result 1525 states and 2526 transitions. [2023-12-15 21:11:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:01,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 359 [2023-12-15 21:11:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:01,142 INFO L225 Difference]: With dead ends: 1525 [2023-12-15 21:11:01,142 INFO L226 Difference]: Without dead ends: 677 [2023-12-15 21:11:01,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 710 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:01,147 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 342 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:01,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 660 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-15 21:11:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 668. [2023-12-15 21:11:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 494 states have (on average 1.5445344129554657) internal successors, (763), 495 states have internal predecessors, (763), 167 states have call successors, (167), 6 states have call predecessors, (167), 6 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2023-12-15 21:11:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1097 transitions. [2023-12-15 21:11:01,191 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1097 transitions. Word has length 359 [2023-12-15 21:11:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:01,191 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1097 transitions. [2023-12-15 21:11:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-15 21:11:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1097 transitions. [2023-12-15 21:11:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-15 21:11:01,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:01,196 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:01,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:11:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:01,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:01,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:01,403 INFO L85 PathProgramCache]: Analyzing trace with hash 558314890, now seen corresponding path program 1 times [2023-12-15 21:11:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583327665] [2023-12-15 21:11:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:01,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287419811] [2023-12-15 21:11:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:01,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:01,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:01,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:11:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:01,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:01,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:02,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583327665] [2023-12-15 21:11:02,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287419811] [2023-12-15 21:11:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287419811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:02,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708004702] [2023-12-15 21:11:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:02,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:11:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:11:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:02,025 INFO L87 Difference]: Start difference. First operand 668 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:02,287 INFO L93 Difference]: Finished difference Result 1680 states and 2757 transitions. [2023-12-15 21:11:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 359 [2023-12-15 21:11:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:02,292 INFO L225 Difference]: With dead ends: 1680 [2023-12-15 21:11:02,292 INFO L226 Difference]: Without dead ends: 1016 [2023-12-15 21:11:02,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:02,294 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 304 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:02,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1063 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-15 21:11:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 797. [2023-12-15 21:11:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 568 states have (on average 1.5140845070422535) internal successors, (860), 568 states have internal predecessors, (860), 220 states have call successors, (220), 8 states have call predecessors, (220), 8 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-15 21:11:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2023-12-15 21:11:02,360 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 359 [2023-12-15 21:11:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:02,360 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2023-12-15 21:11:02,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2023-12-15 21:11:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-15 21:11:02,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:02,363 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:02,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:11:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:02,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:02,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash -211249661, now seen corresponding path program 1 times [2023-12-15 21:11:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114800040] [2023-12-15 21:11:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:02,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079826503] [2023-12-15 21:11:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:02,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:02,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:02,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:11:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:02,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:11:02,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1132 proven. 15 refuted. 0 times theorem prover too weak. 4793 trivial. 0 not checked. [2023-12-15 21:11:03,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 147 proven. 15 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-15 21:11:03,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:03,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114800040] [2023-12-15 21:11:03,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:03,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079826503] [2023-12-15 21:11:03,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079826503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:03,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:03,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-15 21:11:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561482469] [2023-12-15 21:11:03,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:11:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:11:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:11:03,495 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-12-15 21:11:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:04,496 INFO L93 Difference]: Finished difference Result 2994 states and 4944 transitions. [2023-12-15 21:11:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:11:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) Word has length 360 [2023-12-15 21:11:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:04,506 INFO L225 Difference]: With dead ends: 2994 [2023-12-15 21:11:04,506 INFO L226 Difference]: Without dead ends: 2330 [2023-12-15 21:11:04,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:11:04,509 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1180 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:04,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1861 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:11:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2023-12-15 21:11:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1477. [2023-12-15 21:11:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1073 states have (on average 1.5135135135135136) internal successors, (1624), 1073 states have internal predecessors, (1624), 385 states have call successors, (385), 18 states have call predecessors, (385), 18 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2394 transitions. [2023-12-15 21:11:04,628 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2394 transitions. Word has length 360 [2023-12-15 21:11:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:04,629 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2394 transitions. [2023-12-15 21:11:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 4 states have call successors, (110), 3 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2023-12-15 21:11:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2394 transitions. [2023-12-15 21:11:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-15 21:11:04,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:04,632 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:04,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 21:11:04,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:04,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:04,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1517599677, now seen corresponding path program 1 times [2023-12-15 21:11:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374009485] [2023-12-15 21:11:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:04,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:04,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653112018] [2023-12-15 21:11:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:04,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:04,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:04,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:11:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:05,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:05,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1834 proven. 132 refuted. 0 times theorem prover too weak. 3974 trivial. 0 not checked. [2023-12-15 21:11:05,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 30 proven. 132 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-15 21:11:05,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374009485] [2023-12-15 21:11:05,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653112018] [2023-12-15 21:11:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653112018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:05,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:05,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963912330] [2023-12-15 21:11:05,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:05,650 INFO L87 Difference]: Start difference. First operand 1477 states and 2394 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 21:11:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:05,927 INFO L93 Difference]: Finished difference Result 2853 states and 4591 transitions. [2023-12-15 21:11:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:05,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 360 [2023-12-15 21:11:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:05,940 INFO L225 Difference]: With dead ends: 2853 [2023-12-15 21:11:05,940 INFO L226 Difference]: Without dead ends: 1527 [2023-12-15 21:11:05,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 712 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:05,944 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 184 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:05,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 654 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2023-12-15 21:11:06,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1497. [2023-12-15 21:11:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1086 states have (on average 1.485267034990792) internal successors, (1613), 1086 states have internal predecessors, (1613), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2383 transitions. [2023-12-15 21:11:06,032 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2383 transitions. Word has length 360 [2023-12-15 21:11:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:06,033 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2383 transitions. [2023-12-15 21:11:06,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-15 21:11:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2383 transitions. [2023-12-15 21:11:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-15 21:11:06,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:06,036 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:06,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:06,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:06,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:06,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1589986235, now seen corresponding path program 1 times [2023-12-15 21:11:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:06,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536971553] [2023-12-15 21:11:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:06,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:06,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:06,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881210623] [2023-12-15 21:11:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:06,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:06,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:06,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:11:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:06,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:06,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:07,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536971553] [2023-12-15 21:11:07,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881210623] [2023-12-15 21:11:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881210623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992751671] [2023-12-15 21:11:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:07,076 INFO L87 Difference]: Start difference. First operand 1497 states and 2383 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:07,240 INFO L93 Difference]: Finished difference Result 3463 states and 5562 transitions. [2023-12-15 21:11:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2023-12-15 21:11:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:07,247 INFO L225 Difference]: With dead ends: 3463 [2023-12-15 21:11:07,247 INFO L226 Difference]: Without dead ends: 2121 [2023-12-15 21:11:07,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:07,251 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 124 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:07,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 976 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2023-12-15 21:11:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1905. [2023-12-15 21:11:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1494 states have (on average 1.5481927710843373) internal successors, (2313), 1494 states have internal predecessors, (2313), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3083 transitions. [2023-12-15 21:11:07,352 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3083 transitions. Word has length 360 [2023-12-15 21:11:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:07,353 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 3083 transitions. [2023-12-15 21:11:07,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3083 transitions. [2023-12-15 21:11:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-15 21:11:07,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:07,355 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:07,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:11:07,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:11:07,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:07,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash -467990485, now seen corresponding path program 1 times [2023-12-15 21:11:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:07,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088057294] [2023-12-15 21:11:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:07,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263303815] [2023-12-15 21:11:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:07,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:07,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:07,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:11:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:07,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:07,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:07,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088057294] [2023-12-15 21:11:07,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263303815] [2023-12-15 21:11:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263303815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:07,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:07,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138650177] [2023-12-15 21:11:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:07,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:07,855 INFO L87 Difference]: Start difference. First operand 1905 states and 3083 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:07,920 INFO L93 Difference]: Finished difference Result 4263 states and 6922 transitions. [2023-12-15 21:11:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 361 [2023-12-15 21:11:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:07,945 INFO L225 Difference]: With dead ends: 4263 [2023-12-15 21:11:07,946 INFO L226 Difference]: Without dead ends: 2517 [2023-12-15 21:11:07,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:07,950 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 141 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:07,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 722 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-12-15 21:11:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 1905. [2023-12-15 21:11:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1494 states have (on average 1.5401606425702812) internal successors, (2301), 1494 states have internal predecessors, (2301), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3071 transitions. [2023-12-15 21:11:08,048 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3071 transitions. Word has length 361 [2023-12-15 21:11:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:08,048 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 3071 transitions. [2023-12-15 21:11:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3071 transitions. [2023-12-15 21:11:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-15 21:11:08,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:08,052 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:08,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:08,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:08,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:08,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1981609645, now seen corresponding path program 1 times [2023-12-15 21:11:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10082476] [2023-12-15 21:11:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:08,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:08,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:08,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921835554] [2023-12-15 21:11:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:08,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:08,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:08,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:08,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:11:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:08,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:11:08,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:08,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10082476] [2023-12-15 21:11:08,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921835554] [2023-12-15 21:11:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921835554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:08,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345703289] [2023-12-15 21:11:08,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:08,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:08,617 INFO L87 Difference]: Start difference. First operand 1905 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:08,696 INFO L93 Difference]: Finished difference Result 4251 states and 6890 transitions. [2023-12-15 21:11:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:08,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 361 [2023-12-15 21:11:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:08,705 INFO L225 Difference]: With dead ends: 4251 [2023-12-15 21:11:08,705 INFO L226 Difference]: Without dead ends: 2517 [2023-12-15 21:11:08,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:08,708 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 119 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1209 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-12-15 21:11:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 1509. [2023-12-15 21:11:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1098 states have (on average 1.4726775956284153) internal successors, (1617), 1098 states have internal predecessors, (1617), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2387 transitions. [2023-12-15 21:11:08,838 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2387 transitions. Word has length 361 [2023-12-15 21:11:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:08,839 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2387 transitions. [2023-12-15 21:11:08,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2387 transitions. [2023-12-15 21:11:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-15 21:11:08,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:08,841 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:08,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:11:09,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:09,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash 16118378, now seen corresponding path program 1 times [2023-12-15 21:11:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673418548] [2023-12-15 21:11:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:09,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303260765] [2023-12-15 21:11:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:09,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:09,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:11:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:09,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:11:09,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:09,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673418548] [2023-12-15 21:11:09,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303260765] [2023-12-15 21:11:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303260765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:09,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:09,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874596150] [2023-12-15 21:11:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:09,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:11:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:11:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:09,388 INFO L87 Difference]: Start difference. First operand 1509 states and 2387 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:09,695 INFO L93 Difference]: Finished difference Result 3167 states and 5005 transitions. [2023-12-15 21:11:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:09,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 362 [2023-12-15 21:11:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:09,702 INFO L225 Difference]: With dead ends: 3167 [2023-12-15 21:11:09,702 INFO L226 Difference]: Without dead ends: 1817 [2023-12-15 21:11:09,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:09,705 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 301 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:09,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1248 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-12-15 21:11:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1513. [2023-12-15 21:11:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1102 states have (on average 1.470961887477314) internal successors, (1621), 1102 states have internal predecessors, (1621), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2391 transitions. [2023-12-15 21:11:09,837 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2391 transitions. Word has length 362 [2023-12-15 21:11:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2391 transitions. [2023-12-15 21:11:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2391 transitions. [2023-12-15 21:11:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-15 21:11:09,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:09,840 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:09,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:11:10,047 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:10,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1055986899, now seen corresponding path program 1 times [2023-12-15 21:11:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:10,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759325416] [2023-12-15 21:11:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:10,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:10,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472448941] [2023-12-15 21:11:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:10,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:10,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:10,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:10,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:11:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:10,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:11:10,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:10,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:10,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759325416] [2023-12-15 21:11:10,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472448941] [2023-12-15 21:11:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472448941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:10,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:10,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:11:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178056045] [2023-12-15 21:11:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:10,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:10,377 INFO L87 Difference]: Start difference. First operand 1513 states and 2391 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:10,728 INFO L93 Difference]: Finished difference Result 3805 states and 5975 transitions. [2023-12-15 21:11:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2023-12-15 21:11:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:10,738 INFO L225 Difference]: With dead ends: 3805 [2023-12-15 21:11:10,738 INFO L226 Difference]: Without dead ends: 2451 [2023-12-15 21:11:10,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:11:10,742 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 321 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:10,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1424 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-12-15 21:11:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1595. [2023-12-15 21:11:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1184 states have (on average 1.4721283783783783) internal successors, (1743), 1184 states have internal predecessors, (1743), 385 states have call successors, (385), 25 states have call predecessors, (385), 25 states have return successors, (385), 385 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-15 21:11:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2513 transitions. [2023-12-15 21:11:10,916 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2513 transitions. Word has length 363 [2023-12-15 21:11:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:10,916 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2513 transitions. [2023-12-15 21:11:10,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2513 transitions. [2023-12-15 21:11:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-15 21:11:10,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:10,920 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:10,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:11:11,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash 388493749, now seen corresponding path program 1 times [2023-12-15 21:11:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539626175] [2023-12-15 21:11:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:11,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:11,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378824911] [2023-12-15 21:11:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:11,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:11,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:11,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:11:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:11,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:11:11,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:11,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:11,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:11,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539626175] [2023-12-15 21:11:11,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:11,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378824911] [2023-12-15 21:11:11,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378824911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:11,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:11,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941646434] [2023-12-15 21:11:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:11,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:11,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:11,457 INFO L87 Difference]: Start difference. First operand 1595 states and 2513 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:11,658 INFO L93 Difference]: Finished difference Result 3873 states and 6110 transitions. [2023-12-15 21:11:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2023-12-15 21:11:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:11,666 INFO L225 Difference]: With dead ends: 3873 [2023-12-15 21:11:11,666 INFO L226 Difference]: Without dead ends: 2437 [2023-12-15 21:11:11,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:11,669 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 308 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:11,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 686 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2023-12-15 21:11:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1964. [2023-12-15 21:11:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1436 states have (on average 1.4547353760445683) internal successors, (2089), 1436 states have internal predecessors, (2089), 495 states have call successors, (495), 32 states have call predecessors, (495), 32 states have return successors, (495), 495 states have call predecessors, (495), 495 states have call successors, (495) [2023-12-15 21:11:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 3079 transitions. [2023-12-15 21:11:11,856 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 3079 transitions. Word has length 363 [2023-12-15 21:11:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:11,857 INFO L495 AbstractCegarLoop]: Abstraction has 1964 states and 3079 transitions. [2023-12-15 21:11:11,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 3079 transitions. [2023-12-15 21:11:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-15 21:11:11,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:11,859 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:11,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 21:11:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:11:12,066 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:12,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1879446493, now seen corresponding path program 1 times [2023-12-15 21:11:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022795323] [2023-12-15 21:11:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:12,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:12,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317380045] [2023-12-15 21:11:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:12,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:12,121 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:11:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:12,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:11:12,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:12,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022795323] [2023-12-15 21:11:12,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317380045] [2023-12-15 21:11:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317380045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:12,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:12,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:11:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191060879] [2023-12-15 21:11:12,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:12,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:12,467 INFO L87 Difference]: Start difference. First operand 1964 states and 3079 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:13,042 INFO L93 Difference]: Finished difference Result 5015 states and 7805 transitions. [2023-12-15 21:11:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:11:13,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2023-12-15 21:11:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:13,054 INFO L225 Difference]: With dead ends: 5015 [2023-12-15 21:11:13,054 INFO L226 Difference]: Without dead ends: 3210 [2023-12-15 21:11:13,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:13,059 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 559 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:13,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 2090 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:11:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2023-12-15 21:11:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3126. [2023-12-15 21:11:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 2240 states have (on average 1.4209821428571427) internal successors, (3183), 2248 states have internal predecessors, (3183), 823 states have call successors, (823), 62 states have call predecessors, (823), 62 states have return successors, (823), 815 states have call predecessors, (823), 823 states have call successors, (823) [2023-12-15 21:11:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4829 transitions. [2023-12-15 21:11:13,277 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4829 transitions. Word has length 363 [2023-12-15 21:11:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:13,278 INFO L495 AbstractCegarLoop]: Abstraction has 3126 states and 4829 transitions. [2023-12-15 21:11:13,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4829 transitions. [2023-12-15 21:11:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-15 21:11:13,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:13,281 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:13,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:11:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:13,487 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:13,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1992818977, now seen corresponding path program 1 times [2023-12-15 21:11:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494759816] [2023-12-15 21:11:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:13,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648238570] [2023-12-15 21:11:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:13,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:13,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:13,515 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:13,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:11:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:13,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:11:13,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:13,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494759816] [2023-12-15 21:11:13,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648238570] [2023-12-15 21:11:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648238570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:13,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051020346] [2023-12-15 21:11:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:13,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:13,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:13,818 INFO L87 Difference]: Start difference. First operand 3126 states and 4829 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:13,979 INFO L93 Difference]: Finished difference Result 6072 states and 9388 transitions. [2023-12-15 21:11:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2023-12-15 21:11:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:13,996 INFO L225 Difference]: With dead ends: 6072 [2023-12-15 21:11:13,996 INFO L226 Difference]: Without dead ends: 3126 [2023-12-15 21:11:14,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:14,003 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 9 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:14,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 946 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:14,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-12-15 21:11:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3126. [2023-12-15 21:11:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 2240 states have (on average 1.4183035714285714) internal successors, (3177), 2248 states have internal predecessors, (3177), 823 states have call successors, (823), 62 states have call predecessors, (823), 62 states have return successors, (823), 815 states have call predecessors, (823), 823 states have call successors, (823) [2023-12-15 21:11:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4823 transitions. [2023-12-15 21:11:14,203 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4823 transitions. Word has length 363 [2023-12-15 21:11:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:14,203 INFO L495 AbstractCegarLoop]: Abstraction has 3126 states and 4823 transitions. [2023-12-15 21:11:14,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4823 transitions. [2023-12-15 21:11:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-15 21:11:14,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:14,206 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:14,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:11:14,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:11:14,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:14,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1774711361, now seen corresponding path program 1 times [2023-12-15 21:11:14,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:14,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369590467] [2023-12-15 21:11:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:14,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:14,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105745350] [2023-12-15 21:11:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:14,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:14,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:14,486 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:14,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:11:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:14,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:11:14,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2952 proven. 93 refuted. 0 times theorem prover too weak. 2895 trivial. 0 not checked. [2023-12-15 21:11:15,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 69 proven. 93 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-15 21:11:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369590467] [2023-12-15 21:11:15,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105745350] [2023-12-15 21:11:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105745350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:15,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-15 21:11:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277133391] [2023-12-15 21:11:15,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:15,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:11:15,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:11:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:11:15,433 INFO L87 Difference]: Start difference. First operand 3126 states and 4823 transitions. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-15 21:11:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:17,298 INFO L93 Difference]: Finished difference Result 7452 states and 11389 transitions. [2023-12-15 21:11:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-15 21:11:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 364 [2023-12-15 21:11:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:17,321 INFO L225 Difference]: With dead ends: 7452 [2023-12-15 21:11:17,321 INFO L226 Difference]: Without dead ends: 4506 [2023-12-15 21:11:17,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 717 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 21:11:17,344 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1170 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:17,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 2052 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 21:11:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2023-12-15 21:11:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4290. [2023-12-15 21:11:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 3093 states have (on average 1.4089880375040413) internal successors, (4358), 3103 states have internal predecessors, (4358), 1089 states have call successors, (1089), 107 states have call predecessors, (1089), 107 states have return successors, (1089), 1079 states have call predecessors, (1089), 1089 states have call successors, (1089) [2023-12-15 21:11:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6536 transitions. [2023-12-15 21:11:17,689 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6536 transitions. Word has length 364 [2023-12-15 21:11:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:17,689 INFO L495 AbstractCegarLoop]: Abstraction has 4290 states and 6536 transitions. [2023-12-15 21:11:17,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-15 21:11:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6536 transitions. [2023-12-15 21:11:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-15 21:11:17,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:17,712 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:17,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:17,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:11:17,918 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:17,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash 680359628, now seen corresponding path program 1 times [2023-12-15 21:11:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045414983] [2023-12-15 21:11:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:17,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:17,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222732980] [2023-12-15 21:11:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:17,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:17,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:17,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:11:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:18,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:11:18,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:18,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045414983] [2023-12-15 21:11:18,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222732980] [2023-12-15 21:11:18,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222732980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:18,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:18,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994566143] [2023-12-15 21:11:18,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:18,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:18,561 INFO L87 Difference]: Start difference. First operand 4290 states and 6536 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:18,925 INFO L93 Difference]: Finished difference Result 9762 states and 14928 transitions. [2023-12-15 21:11:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 364 [2023-12-15 21:11:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:18,941 INFO L225 Difference]: With dead ends: 9762 [2023-12-15 21:11:18,941 INFO L226 Difference]: Without dead ends: 5632 [2023-12-15 21:11:18,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:18,950 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 238 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:18,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 936 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2023-12-15 21:11:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 4284. [2023-12-15 21:11:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3087 states have (on average 1.4058956916099774) internal successors, (4340), 3097 states have internal predecessors, (4340), 1089 states have call successors, (1089), 107 states have call predecessors, (1089), 107 states have return successors, (1089), 1079 states have call predecessors, (1089), 1089 states have call successors, (1089) [2023-12-15 21:11:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6518 transitions. [2023-12-15 21:11:19,261 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6518 transitions. Word has length 364 [2023-12-15 21:11:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:19,261 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6518 transitions. [2023-12-15 21:11:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6518 transitions. [2023-12-15 21:11:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-15 21:11:19,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:19,265 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:19,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:19,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:11:19,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:19,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash -209961676, now seen corresponding path program 1 times [2023-12-15 21:11:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:19,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367630477] [2023-12-15 21:11:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:19,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898668860] [2023-12-15 21:11:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:19,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:19,506 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) [2023-12-15 21:11:19,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:11:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:19,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:11:19,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:20,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:20,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367630477] [2023-12-15 21:11:20,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898668860] [2023-12-15 21:11:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898668860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:20,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:20,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711376342] [2023-12-15 21:11:20,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:20,097 INFO L87 Difference]: Start difference. First operand 4284 states and 6518 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:20,756 INFO L93 Difference]: Finished difference Result 14808 states and 22442 transitions. [2023-12-15 21:11:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:11:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 365 [2023-12-15 21:11:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:20,825 INFO L225 Difference]: With dead ends: 14808 [2023-12-15 21:11:20,825 INFO L226 Difference]: Without dead ends: 10678 [2023-12-15 21:11:20,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:20,836 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 610 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:20,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1448 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:20,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2023-12-15 21:11:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 8300. [2023-12-15 21:11:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8300 states, 5967 states have (on average 1.3943355119825709) internal successors, (8320), 5987 states have internal predecessors, (8320), 2123 states have call successors, (2123), 209 states have call predecessors, (2123), 209 states have return successors, (2123), 2103 states have call predecessors, (2123), 2123 states have call successors, (2123) [2023-12-15 21:11:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8300 states to 8300 states and 12566 transitions. [2023-12-15 21:11:21,601 INFO L78 Accepts]: Start accepts. Automaton has 8300 states and 12566 transitions. Word has length 365 [2023-12-15 21:11:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:21,601 INFO L495 AbstractCegarLoop]: Abstraction has 8300 states and 12566 transitions. [2023-12-15 21:11:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8300 states and 12566 transitions. [2023-12-15 21:11:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-15 21:11:21,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:21,606 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:21,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:21,812 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,SelfDestructingSolverStorable17 [2023-12-15 21:11:21,813 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:21,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2035617778, now seen corresponding path program 1 times [2023-12-15 21:11:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:21,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947046377] [2023-12-15 21:11:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:21,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:21,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345258404] [2023-12-15 21:11:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:21,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:21,840 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:21,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:11:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:22,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:11:22,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2975 proven. 93 refuted. 0 times theorem prover too weak. 2872 trivial. 0 not checked. [2023-12-15 21:11:23,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 69 proven. 93 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-12-15 21:11:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947046377] [2023-12-15 21:11:23,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345258404] [2023-12-15 21:11:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345258404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:23,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:23,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 21:11:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798274370] [2023-12-15 21:11:23,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 21:11:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 21:11:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:11:23,983 INFO L87 Difference]: Start difference. First operand 8300 states and 12566 transitions. Second operand has 16 states, 15 states have (on average 9.933333333333334) internal successors, (149), 16 states have internal predecessors, (149), 6 states have call successors, (110), 4 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 6 states have call successors, (110) [2023-12-15 21:11:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:26,287 INFO L93 Difference]: Finished difference Result 22955 states and 35120 transitions. [2023-12-15 21:11:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:11:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.933333333333334) internal successors, (149), 16 states have internal predecessors, (149), 6 states have call successors, (110), 4 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 6 states have call successors, (110) Word has length 365 [2023-12-15 21:11:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:26,360 INFO L225 Difference]: With dead ends: 22955 [2023-12-15 21:11:26,360 INFO L226 Difference]: Without dead ends: 14812 [2023-12-15 21:11:26,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:11:26,390 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 2046 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:26,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 1789 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:11:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14812 states. [2023-12-15 21:11:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14812 to 10014. [2023-12-15 21:11:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10014 states, 7681 states have (on average 1.4275484962895457) internal successors, (10965), 7701 states have internal predecessors, (10965), 2123 states have call successors, (2123), 209 states have call predecessors, (2123), 209 states have return successors, (2123), 2103 states have call predecessors, (2123), 2123 states have call successors, (2123) [2023-12-15 21:11:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10014 states to 10014 states and 15211 transitions. [2023-12-15 21:11:27,335 INFO L78 Accepts]: Start accepts. Automaton has 10014 states and 15211 transitions. Word has length 365 [2023-12-15 21:11:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:27,336 INFO L495 AbstractCegarLoop]: Abstraction has 10014 states and 15211 transitions. [2023-12-15 21:11:27,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.933333333333334) internal successors, (149), 16 states have internal predecessors, (149), 6 states have call successors, (110), 4 states have call predecessors, (110), 5 states have return successors, (110), 4 states have call predecessors, (110), 6 states have call successors, (110) [2023-12-15 21:11:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10014 states and 15211 transitions. [2023-12-15 21:11:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-15 21:11:27,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:27,341 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:27,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-15 21:11:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:27,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:27,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1836390837, now seen corresponding path program 1 times [2023-12-15 21:11:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828606738] [2023-12-15 21:11:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:27,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663517967] [2023-12-15 21:11:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:27,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:27,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 21:11:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:27,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 21:11:27,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-15 21:11:29,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:29,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828606738] [2023-12-15 21:11:29,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663517967] [2023-12-15 21:11:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663517967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:29,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054244632] [2023-12-15 21:11:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:29,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:29,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:29,601 INFO L87 Difference]: Start difference. First operand 10014 states and 15211 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:30,681 INFO L93 Difference]: Finished difference Result 19990 states and 30327 transitions. [2023-12-15 21:11:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 366 [2023-12-15 21:11:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:30,707 INFO L225 Difference]: With dead ends: 19990 [2023-12-15 21:11:30,707 INFO L226 Difference]: Without dead ends: 10232 [2023-12-15 21:11:30,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:30,723 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 444 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:30,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1142 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10232 states. [2023-12-15 21:11:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10232 to 9718. [2023-12-15 21:11:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9718 states, 7385 states have (on average 1.4231550440081246) internal successors, (10510), 7405 states have internal predecessors, (10510), 2123 states have call successors, (2123), 209 states have call predecessors, (2123), 209 states have return successors, (2123), 2103 states have call predecessors, (2123), 2123 states have call successors, (2123) [2023-12-15 21:11:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9718 states to 9718 states and 14756 transitions. [2023-12-15 21:11:31,498 INFO L78 Accepts]: Start accepts. Automaton has 9718 states and 14756 transitions. Word has length 366 [2023-12-15 21:11:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 9718 states and 14756 transitions. [2023-12-15 21:11:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-15 21:11:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 9718 states and 14756 transitions. [2023-12-15 21:11:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-15 21:11:31,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:31,503 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:31,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:31,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:31,711 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:31,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash -8976329, now seen corresponding path program 1 times [2023-12-15 21:11:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:31,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362553465] [2023-12-15 21:11:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:31,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:31,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337109819] [2023-12-15 21:11:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:31,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:31,757 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:31,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 21:11:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:32,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-15 21:11:32,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2390 proven. 78 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2023-12-15 21:11:35,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 240 proven. 81 refuted. 0 times theorem prover too weak. 5619 trivial. 0 not checked. [2023-12-15 21:11:38,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362553465] [2023-12-15 21:11:38,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:38,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337109819] [2023-12-15 21:11:38,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337109819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:38,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:38,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2023-12-15 21:11:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105492122] [2023-12-15 21:11:38,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 21:11:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 21:11:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:11:38,097 INFO L87 Difference]: Start difference. First operand 9718 states and 14756 transitions. Second operand has 29 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 6 states have call successors, (110), 4 states have call predecessors, (110), 7 states have return successors, (110), 6 states have call predecessors, (110), 6 states have call successors, (110) Received shutdown request... [2023-12-15 21:11:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-15 21:11:56,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2653 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1910, Invalid=6280, Unknown=0, NotChecked=0, Total=8190 [2023-12-15 21:11:56,488 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 3930 mSDsluCounter, 5882 mSDsCounter, 0 mSdLazyCounter, 7531 mSolverCounterSat, 2081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3972 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 9612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2081 IncrementalHoareTripleChecker+Valid, 7531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3972 Valid, 6461 Invalid, 9612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2081 Valid, 7531 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-15 21:11:56,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:11:56,494 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:11:56,495 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:11:56,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-15 21:11:56,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:56,701 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (9718states) and FLOYD_HOARE automaton (currently 70 states, 29 states before enhancement),while ReachableStatesComputation was computing reachable states (16719 states constructed, input type IntersectNwa). [2023-12-15 21:11:56,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:56,717 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:11:56,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:11:56 BoogieIcfgContainer [2023-12-15 21:11:56,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:11:56,720 INFO L158 Benchmark]: Toolchain (without parser) took 61306.90ms. Allocated memory was 221.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 164.5MB in the beginning and 985.4MB in the end (delta: -820.9MB). Peak memory consumption was 536.9MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,721 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 221.2MB. Free memory is still 169.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:11:56,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.63ms. Allocated memory is still 221.2MB. Free memory was 164.5MB in the beginning and 140.3MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.06ms. Allocated memory is still 221.2MB. Free memory was 140.3MB in the beginning and 133.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,721 INFO L158 Benchmark]: Boogie Preprocessor took 61.93ms. Allocated memory is still 221.2MB. Free memory was 133.1MB in the beginning and 123.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,722 INFO L158 Benchmark]: RCFGBuilder took 808.22ms. Allocated memory was 221.2MB in the beginning and 274.7MB in the end (delta: 53.5MB). Free memory was 123.6MB in the beginning and 190.9MB in the end (delta: -67.3MB). Peak memory consumption was 22.8MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,722 INFO L158 Benchmark]: TraceAbstraction took 60047.22ms. Allocated memory was 274.7MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.4MB in the beginning and 985.4MB in the end (delta: -795.0MB). Peak memory consumption was 507.8MB. Max. memory is 8.0GB. [2023-12-15 21:11:56,725 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 221.2MB. Free memory is still 169.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 330.63ms. Allocated memory is still 221.2MB. Free memory was 164.5MB in the beginning and 140.3MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.06ms. Allocated memory is still 221.2MB. Free memory was 140.3MB in the beginning and 133.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.93ms. Allocated memory is still 221.2MB. Free memory was 133.1MB in the beginning and 123.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 808.22ms. Allocated memory was 221.2MB in the beginning and 274.7MB in the end (delta: 53.5MB). Free memory was 123.6MB in the beginning and 190.9MB in the end (delta: -67.3MB). Peak memory consumption was 22.8MB. Max. memory is 8.0GB. * TraceAbstraction took 60047.22ms. Allocated memory was 274.7MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.4MB in the beginning and 985.4MB in the end (delta: -795.0MB). Peak memory consumption was 507.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (9718states) and FLOYD_HOARE automaton (currently 70 states, 29 states before enhancement),while ReachableStatesComputation was computing reachable states (16719 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 202 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.0s, OverallIterations: 21, TraceHistogramMax: 55, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14001 SdHoareTripleChecker+Valid, 16.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13745 mSDsluCounter, 29815 SdHoareTripleChecker+Invalid, 14.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21975 mSDsCounter, 3961 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14710 IncrementalHoareTripleChecker+Invalid, 18671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3961 mSolverCounterUnsat, 7840 mSDtfsCounter, 14710 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9893 GetRequests, 9652 SyntacticMatches, 3 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10014occurred in iteration=19, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 14200 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 7957 NumberOfCodeBlocks, 7957 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 9746 ConstructedInterpolants, 5 QuantifiedInterpolants, 39558 SizeOfPredicates, 80 NumberOfNonLiveVariables, 17767 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 159243/160380 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown