/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_fillercode_fillercodesize_ps-cn-250_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:50:16,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:50:16,756 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 19:50:16,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:50:16,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:50:16,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:50:16,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:50:16,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:50:16,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:50:16,786 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:50:16,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:50:16,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:50:16,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:50:16,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:50:16,787 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:50:16,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:50:16,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:50:16,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:50:16,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:50:16,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:50:16,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:50:16,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:50:16,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:50:16,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:50:16,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:50:16,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:50:16,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:50:16,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:50:16,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:50:16,792 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:50:16,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:50:16,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:50:16,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:50:16,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:50:17,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:50:17,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:50:17,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:50:17,007 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:50:17,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-59.i [2023-12-15 19:50:17,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:50:18,175 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:50:18,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-59.i [2023-12-15 19:50:18,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa57bb39e/53a390297efe42f4811744eadb3bfdd3/FLAG581906853 [2023-12-15 19:50:18,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa57bb39e/53a390297efe42f4811744eadb3bfdd3 [2023-12-15 19:50:18,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:50:18,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:50:18,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:18,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:50:18,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:50:18,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e182df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18, skipping insertion in model container [2023-12-15 19:50:18,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:50:18,387 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-59.i[916,929] [2023-12-15 19:50:18,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:18,505 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:50:18,521 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-59.i[916,929] [2023-12-15 19:50:18,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:50:18,596 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:50:18,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18 WrapperNode [2023-12-15 19:50:18,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:50:18,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:18,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:50:18,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:50:18,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,663 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 455 [2023-12-15 19:50:18,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:50:18,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:50:18,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:50:18,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:50:18,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,702 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 19:50:18,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:50:18,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:50:18,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:50:18,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:50:18,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (1/1) ... [2023-12-15 19:50:18,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:50:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:18,806 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 19:50:18,826 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 19:50:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:50:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:50:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:50:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:50:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:50:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:50:18,938 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:50:18,941 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:50:19,463 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:50:19,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:50:19,507 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:50:19,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:19 BoogieIcfgContainer [2023-12-15 19:50:19,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:50:19,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:50:19,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:50:19,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:50:19,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:50:18" (1/3) ... [2023-12-15 19:50:19,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69162c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:19, skipping insertion in model container [2023-12-15 19:50:19,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:50:18" (2/3) ... [2023-12-15 19:50:19,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69162c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:50:19, skipping insertion in model container [2023-12-15 19:50:19,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:50:19" (3/3) ... [2023-12-15 19:50:19,514 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-59.i [2023-12-15 19:50:19,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:50:19,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:50:19,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:50:19,576 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;@17e8c9fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:50:19,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:50:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 121 states have (on average 1.6115702479338843) internal successors, (195), 122 states have internal predecessors, (195), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 19:50:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-15 19:50:19,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:19,598 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:19,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:19,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash -477104917, now seen corresponding path program 1 times [2023-12-15 19:50:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450538307] [2023-12-15 19:50:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:19,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:19,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281094217] [2023-12-15 19:50:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:19,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:50:19,843 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 19:50:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:20,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:50:20,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 19:50:20,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450538307] [2023-12-15 19:50:20,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281094217] [2023-12-15 19:50:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281094217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:20,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:20,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823273494] [2023-12-15 19:50:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:20,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:50:20,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:50:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:50:20,270 INFO L87 Difference]: Start difference. First operand has 183 states, 121 states have (on average 1.6115702479338843) internal successors, (195), 122 states have internal predecessors, (195), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:20,394 INFO L93 Difference]: Finished difference Result 482 states and 920 transitions. [2023-12-15 19:50:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:50:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 377 [2023-12-15 19:50:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:20,404 INFO L225 Difference]: With dead ends: 482 [2023-12-15 19:50:20,404 INFO L226 Difference]: Without dead ends: 300 [2023-12-15 19:50:20,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 375 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 19:50:20,412 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 173 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:20,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 576 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:50:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-15 19:50:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2023-12-15 19:50:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 207 states have (on average 1.5942028985507246) internal successors, (330), 208 states have internal predecessors, (330), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-15 19:50:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 504 transitions. [2023-12-15 19:50:20,497 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 504 transitions. Word has length 377 [2023-12-15 19:50:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:20,500 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 504 transitions. [2023-12-15 19:50:20,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 504 transitions. [2023-12-15 19:50:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-15 19:50:20,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:20,510 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:20,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:50:20,716 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 19:50:20,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -153614093, now seen corresponding path program 1 times [2023-12-15 19:50:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354043236] [2023-12-15 19:50:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:20,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544787526] [2023-12-15 19:50:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:20,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:20,818 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 19:50:20,823 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 19:50:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:21,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:50:21,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2778 proven. 126 refuted. 0 times theorem prover too weak. 3940 trivial. 0 not checked. [2023-12-15 19:50:21,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 48 proven. 126 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 19:50:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354043236] [2023-12-15 19:50:21,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:21,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544787526] [2023-12-15 19:50:21,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544787526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:21,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:21,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 19:50:21,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056171724] [2023-12-15 19:50:21,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:50:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:50:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:50:21,669 INFO L87 Difference]: Start difference. First operand 297 states and 504 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-15 19:50:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:22,011 INFO L93 Difference]: Finished difference Result 605 states and 1017 transitions. [2023-12-15 19:50:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:50:22,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 377 [2023-12-15 19:50:22,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:22,016 INFO L225 Difference]: With dead ends: 605 [2023-12-15 19:50:22,016 INFO L226 Difference]: Without dead ends: 309 [2023-12-15 19:50:22,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:50:22,030 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 324 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:22,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 508 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:50:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-15 19:50:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2023-12-15 19:50:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 213 states have (on average 1.568075117370892) internal successors, (334), 214 states have internal predecessors, (334), 87 states have call successors, (87), 4 states have call predecessors, (87), 4 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-15 19:50:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 508 transitions. [2023-12-15 19:50:22,054 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 508 transitions. Word has length 377 [2023-12-15 19:50:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:22,055 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 508 transitions. [2023-12-15 19:50:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-12-15 19:50:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 508 transitions. [2023-12-15 19:50:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-15 19:50:22,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:22,063 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:22,071 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 19:50:22,268 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 19:50:22,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:22,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash -988462307, now seen corresponding path program 1 times [2023-12-15 19:50:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:22,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844324899] [2023-12-15 19:50:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:22,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784357114] [2023-12-15 19:50:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:22,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:22,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:22,330 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 19:50:22,352 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 19:50:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:22,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:50:22,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3499 proven. 21 refuted. 0 times theorem prover too weak. 3324 trivial. 0 not checked. [2023-12-15 19:50:23,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 153 proven. 21 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 19:50:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844324899] [2023-12-15 19:50:23,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784357114] [2023-12-15 19:50:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784357114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:23,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-15 19:50:23,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088342728] [2023-12-15 19:50:23,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:50:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:50:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:50:23,630 INFO L87 Difference]: Start difference. First operand 305 states and 508 transitions. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) [2023-12-15 19:50:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:24,460 INFO L93 Difference]: Finished difference Result 1109 states and 1842 transitions. [2023-12-15 19:50:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 19:50:24,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) Word has length 378 [2023-12-15 19:50:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:24,465 INFO L225 Difference]: With dead ends: 1109 [2023-12-15 19:50:24,465 INFO L226 Difference]: Without dead ends: 805 [2023-12-15 19:50:24,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:50:24,467 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 495 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:24,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1470 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:50:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-15 19:50:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 611. [2023-12-15 19:50:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 427 states have (on average 1.5620608899297423) internal successors, (667), 429 states have internal predecessors, (667), 174 states have call successors, (174), 9 states have call predecessors, (174), 9 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-15 19:50:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1015 transitions. [2023-12-15 19:50:24,533 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1015 transitions. Word has length 378 [2023-12-15 19:50:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:24,537 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1015 transitions. [2023-12-15 19:50:24,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) [2023-12-15 19:50:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1015 transitions. [2023-12-15 19:50:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-15 19:50:24,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:24,540 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:24,546 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 19:50:24,748 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 19:50:24,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:24,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash -762553151, now seen corresponding path program 1 times [2023-12-15 19:50:24,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294868783] [2023-12-15 19:50:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:24,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:24,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082103029] [2023-12-15 19:50:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:24,803 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 19:50:24,810 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 19:50:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:24,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:50:24,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 19:50:25,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294868783] [2023-12-15 19:50:25,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082103029] [2023-12-15 19:50:25,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082103029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:50:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936368319] [2023-12-15 19:50:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:25,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:50:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:50:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:50:25,165 INFO L87 Difference]: Start difference. First operand 611 states and 1015 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:25,862 INFO L93 Difference]: Finished difference Result 2427 states and 4016 transitions. [2023-12-15 19:50:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:50:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2023-12-15 19:50:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:25,870 INFO L225 Difference]: With dead ends: 2427 [2023-12-15 19:50:25,870 INFO L226 Difference]: Without dead ends: 1817 [2023-12-15 19:50:25,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:50:25,872 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 559 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:25,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1755 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:50:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-12-15 19:50:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1441. [2023-12-15 19:50:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1113 states have (on average 1.6109613656783468) internal successors, (1793), 1123 states have internal predecessors, (1793), 302 states have call successors, (302), 25 states have call predecessors, (302), 25 states have return successors, (302), 292 states have call predecessors, (302), 302 states have call successors, (302) [2023-12-15 19:50:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2397 transitions. [2023-12-15 19:50:25,951 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2397 transitions. Word has length 379 [2023-12-15 19:50:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:25,952 INFO L495 AbstractCegarLoop]: Abstraction has 1441 states and 2397 transitions. [2023-12-15 19:50:25,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2397 transitions. [2023-12-15 19:50:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-15 19:50:25,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:25,955 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:25,963 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 19:50:26,159 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 19:50:26,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:26,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1149489597, now seen corresponding path program 1 times [2023-12-15 19:50:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048295399] [2023-12-15 19:50:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:26,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:26,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197776067] [2023-12-15 19:50:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:26,188 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 19:50:26,193 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 19:50:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:26,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:50:26,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 19:50:26,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:26,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:26,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048295399] [2023-12-15 19:50:26,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197776067] [2023-12-15 19:50:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197776067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:26,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:50:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048442518] [2023-12-15 19:50:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:50:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:26,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:50:26,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:50:26,723 INFO L87 Difference]: Start difference. First operand 1441 states and 2397 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:26,935 INFO L93 Difference]: Finished difference Result 3675 states and 6152 transitions. [2023-12-15 19:50:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:50:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2023-12-15 19:50:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:26,951 INFO L225 Difference]: With dead ends: 3675 [2023-12-15 19:50:26,951 INFO L226 Difference]: Without dead ends: 2235 [2023-12-15 19:50:26,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 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 19:50:26,957 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 275 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:26,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 905 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:50:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-12-15 19:50:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2041. [2023-12-15 19:50:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1649 states have (on average 1.6428138265615524) internal successors, (2709), 1659 states have internal predecessors, (2709), 361 states have call successors, (361), 30 states have call predecessors, (361), 30 states have return successors, (361), 351 states have call predecessors, (361), 361 states have call successors, (361) [2023-12-15 19:50:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 3431 transitions. [2023-12-15 19:50:27,057 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 3431 transitions. Word has length 379 [2023-12-15 19:50:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:27,058 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 3431 transitions. [2023-12-15 19:50:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:50:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 3431 transitions. [2023-12-15 19:50:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:50:27,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:27,061 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:27,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:27,270 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 19:50:27,270 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:27,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1745769224, now seen corresponding path program 1 times [2023-12-15 19:50:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312760448] [2023-12-15 19:50:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:27,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846778115] [2023-12-15 19:50:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:27,302 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 19:50:27,325 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 19:50:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:27,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 19:50:27,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 724 proven. 165 refuted. 0 times theorem prover too weak. 5955 trivial. 0 not checked. [2023-12-15 19:50:29,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 9 proven. 165 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 19:50:29,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:29,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312760448] [2023-12-15 19:50:29,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:29,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846778115] [2023-12-15 19:50:29,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846778115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:29,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:29,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-15 19:50:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127222020] [2023-12-15 19:50:29,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 19:50:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 19:50:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:50:29,646 INFO L87 Difference]: Start difference. First operand 2041 states and 3431 transitions. Second operand has 16 states, 16 states have (on average 10.9375) internal successors, (175), 16 states have internal predecessors, (175), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) [2023-12-15 19:50:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:30,898 INFO L93 Difference]: Finished difference Result 3949 states and 6533 transitions. [2023-12-15 19:50:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 19:50:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.9375) internal successors, (175), 16 states have internal predecessors, (175), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) Word has length 380 [2023-12-15 19:50:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:30,908 INFO L225 Difference]: With dead ends: 3949 [2023-12-15 19:50:30,908 INFO L226 Difference]: Without dead ends: 2509 [2023-12-15 19:50:30,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-12-15 19:50:30,912 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1416 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:30,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1773 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:50:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2023-12-15 19:50:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2321. [2023-12-15 19:50:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1880 states have (on average 1.6148936170212767) internal successors, (3036), 1902 states have internal predecessors, (3036), 397 states have call successors, (397), 43 states have call predecessors, (397), 43 states have return successors, (397), 375 states have call predecessors, (397), 397 states have call successors, (397) [2023-12-15 19:50:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3830 transitions. [2023-12-15 19:50:31,097 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3830 transitions. Word has length 380 [2023-12-15 19:50:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:31,097 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3830 transitions. [2023-12-15 19:50:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.9375) internal successors, (175), 16 states have internal predecessors, (175), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) [2023-12-15 19:50:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3830 transitions. [2023-12-15 19:50:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:50:31,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:31,100 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:31,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:50:31,307 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 19:50:31,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:31,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1044704646, now seen corresponding path program 1 times [2023-12-15 19:50:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893047072] [2023-12-15 19:50:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:31,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:31,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229870466] [2023-12-15 19:50:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:31,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:31,346 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 19:50:31,349 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 19:50:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:31,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 19:50:31,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 4267 proven. 153 refuted. 0 times theorem prover too weak. 2424 trivial. 0 not checked. [2023-12-15 19:50:32,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:50:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 111 proven. 63 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 19:50:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893047072] [2023-12-15 19:50:33,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229870466] [2023-12-15 19:50:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229870466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:50:33,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:50:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2023-12-15 19:50:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442622625] [2023-12-15 19:50:33,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:50:33,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 19:50:33,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 19:50:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:50:33,577 INFO L87 Difference]: Start difference. First operand 2321 states and 3830 transitions. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 5 states have call successors, (118), 4 states have call predecessors, (118), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) [2023-12-15 19:50:40,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 19:50:44,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 19:50:48,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 19:50:52,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 19:50:56,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 19:50:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:57,358 INFO L93 Difference]: Finished difference Result 13826 states and 22317 transitions. [2023-12-15 19:50:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-15 19:50:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 5 states have call successors, (118), 4 states have call predecessors, (118), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) Word has length 380 [2023-12-15 19:50:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:57,399 INFO L225 Difference]: With dead ends: 13826 [2023-12-15 19:50:57,400 INFO L226 Difference]: Without dead ends: 11990 [2023-12-15 19:50:57,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=627, Invalid=1535, Unknown=0, NotChecked=0, Total=2162 [2023-12-15 19:50:57,407 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1964 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 844 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:57,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 2577 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 2255 Invalid, 4 Unknown, 0 Unchecked, 22.4s Time] [2023-12-15 19:50:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2023-12-15 19:50:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 7464. [2023-12-15 19:50:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 6255 states have (on average 1.6509992006394885) internal successors, (10327), 6311 states have internal predecessors, (10327), 1061 states have call successors, (1061), 147 states have call predecessors, (1061), 147 states have return successors, (1061), 1005 states have call predecessors, (1061), 1061 states have call successors, (1061) [2023-12-15 19:50:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 12449 transitions. [2023-12-15 19:50:57,959 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 12449 transitions. Word has length 380 [2023-12-15 19:50:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:50:57,960 INFO L495 AbstractCegarLoop]: Abstraction has 7464 states and 12449 transitions. [2023-12-15 19:50:57,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 5 states have call successors, (118), 4 states have call predecessors, (118), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) [2023-12-15 19:50:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 12449 transitions. [2023-12-15 19:50:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:50:57,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:50:57,964 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:57,972 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 19:50:58,169 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 19:50:58,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:50:58,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:50:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash -949440060, now seen corresponding path program 1 times [2023-12-15 19:50:58,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:50:58,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10846649] [2023-12-15 19:50:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:50:58,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:50:58,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964177225] [2023-12-15 19:50:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:50:58,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:50:58,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:50:58,215 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 19:50:58,220 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 19:50:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:50:58,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:50:58,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:50:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2952 proven. 0 refuted. 0 times theorem prover too weak. 3892 trivial. 0 not checked. [2023-12-15 19:50:58,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:50:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:50:58,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10846649] [2023-12-15 19:50:58,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:50:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964177225] [2023-12-15 19:50:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964177225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:50:58,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:50:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:50:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344499419] [2023-12-15 19:50:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:50:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:50:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:50:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:50:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:58,759 INFO L87 Difference]: Start difference. First operand 7464 states and 12449 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:50:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:50:59,758 INFO L93 Difference]: Finished difference Result 19042 states and 31616 transitions. [2023-12-15 19:50:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:50:59,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 380 [2023-12-15 19:50:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:50:59,793 INFO L225 Difference]: With dead ends: 19042 [2023-12-15 19:50:59,793 INFO L226 Difference]: Without dead ends: 13274 [2023-12-15 19:50:59,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:50:59,805 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 538 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:50:59,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 588 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:50:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13274 states. [2023-12-15 19:51:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13274 to 9470. [2023-12-15 19:51:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9470 states, 8197 states have (on average 1.685616689032573) internal successors, (13817), 8257 states have internal predecessors, (13817), 1117 states have call successors, (1117), 155 states have call predecessors, (1117), 155 states have return successors, (1117), 1057 states have call predecessors, (1117), 1117 states have call successors, (1117) [2023-12-15 19:51:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9470 states to 9470 states and 16051 transitions. [2023-12-15 19:51:00,418 INFO L78 Accepts]: Start accepts. Automaton has 9470 states and 16051 transitions. Word has length 380 [2023-12-15 19:51:00,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:00,419 INFO L495 AbstractCegarLoop]: Abstraction has 9470 states and 16051 transitions. [2023-12-15 19:51:00,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:51:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9470 states and 16051 transitions. [2023-12-15 19:51:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:51:00,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:00,424 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:00,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:00,630 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 19:51:00,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:00,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 11018826, now seen corresponding path program 1 times [2023-12-15 19:51:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518330507] [2023-12-15 19:51:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:00,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930265571] [2023-12-15 19:51:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:00,677 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 19:51:00,691 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 19:51:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:00,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:51:00,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2952 proven. 0 refuted. 0 times theorem prover too weak. 3892 trivial. 0 not checked. [2023-12-15 19:51:01,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:01,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518330507] [2023-12-15 19:51:01,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930265571] [2023-12-15 19:51:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930265571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:01,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:51:01,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844475433] [2023-12-15 19:51:01,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:01,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:51:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:51:01,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:51:01,159 INFO L87 Difference]: Start difference. First operand 9470 states and 16051 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:51:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:02,342 INFO L93 Difference]: Finished difference Result 17812 states and 29988 transitions. [2023-12-15 19:51:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:51:02,343 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 380 [2023-12-15 19:51:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:02,360 INFO L225 Difference]: With dead ends: 17812 [2023-12-15 19:51:02,361 INFO L226 Difference]: Without dead ends: 10598 [2023-12-15 19:51:02,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:51:02,371 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 639 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:02,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1108 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:51:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2023-12-15 19:51:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 8640. [2023-12-15 19:51:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8640 states, 7431 states have (on average 1.6793163773381778) internal successors, (12479), 7487 states have internal predecessors, (12479), 1061 states have call successors, (1061), 147 states have call predecessors, (1061), 147 states have return successors, (1061), 1005 states have call predecessors, (1061), 1061 states have call successors, (1061) [2023-12-15 19:51:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 14601 transitions. [2023-12-15 19:51:02,865 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 14601 transitions. Word has length 380 [2023-12-15 19:51:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:02,865 INFO L495 AbstractCegarLoop]: Abstraction has 8640 states and 14601 transitions. [2023-12-15 19:51:02,866 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:51:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 14601 transitions. [2023-12-15 19:51:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:51:02,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:02,872 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:02,892 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 19:51:03,080 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 19:51:03,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:03,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1845938942, now seen corresponding path program 1 times [2023-12-15 19:51:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828587748] [2023-12-15 19:51:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:03,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102251156] [2023-12-15 19:51:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:03,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:03,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:03,129 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 19:51:03,157 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 19:51:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:03,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:51:03,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2952 proven. 0 refuted. 0 times theorem prover too weak. 3892 trivial. 0 not checked. [2023-12-15 19:51:04,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828587748] [2023-12-15 19:51:04,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102251156] [2023-12-15 19:51:04,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102251156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:04,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:04,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:51:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940595555] [2023-12-15 19:51:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:04,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:51:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:51:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:04,990 INFO L87 Difference]: Start difference. First operand 8640 states and 14601 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:51:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:09,701 INFO L93 Difference]: Finished difference Result 18270 states and 30816 transitions. [2023-12-15 19:51:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:51:09,702 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 380 [2023-12-15 19:51:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:09,722 INFO L225 Difference]: With dead ends: 18270 [2023-12-15 19:51:09,722 INFO L226 Difference]: Without dead ends: 10596 [2023-12-15 19:51:09,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:09,732 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 334 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:09,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 526 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-15 19:51:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10596 states. [2023-12-15 19:51:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10596 to 10350. [2023-12-15 19:51:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 8898 states have (on average 1.6689143627781524) internal successors, (14850), 8970 states have internal predecessors, (14850), 1265 states have call successors, (1265), 186 states have call predecessors, (1265), 186 states have return successors, (1265), 1193 states have call predecessors, (1265), 1265 states have call successors, (1265) [2023-12-15 19:51:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 17380 transitions. [2023-12-15 19:51:10,477 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 17380 transitions. Word has length 380 [2023-12-15 19:51:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:10,477 INFO L495 AbstractCegarLoop]: Abstraction has 10350 states and 17380 transitions. [2023-12-15 19:51:10,478 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), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 19:51:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 17380 transitions. [2023-12-15 19:51:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2023-12-15 19:51:10,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:10,483 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:10,489 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 19:51:10,689 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 19:51:10,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:10,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2025381632, now seen corresponding path program 1 times [2023-12-15 19:51:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156200706] [2023-12-15 19:51:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:10,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:10,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796935338] [2023-12-15 19:51:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:10,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:10,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:10,720 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 19:51:10,747 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 19:51:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:11,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:51:11,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 19:51:11,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156200706] [2023-12-15 19:51:11,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796935338] [2023-12-15 19:51:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796935338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:11,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:51:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827830690] [2023-12-15 19:51:11,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:11,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:51:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:51:11,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:51:11,328 INFO L87 Difference]: Start difference. First operand 10350 states and 17380 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:51:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:13,103 INFO L93 Difference]: Finished difference Result 26706 states and 44383 transitions. [2023-12-15 19:51:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:51:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 380 [2023-12-15 19:51:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:13,143 INFO L225 Difference]: With dead ends: 26706 [2023-12-15 19:51:13,143 INFO L226 Difference]: Without dead ends: 18718 [2023-12-15 19:51:13,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:51:13,155 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 477 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:13,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1069 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:51:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18718 states. [2023-12-15 19:51:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18718 to 18336. [2023-12-15 19:51:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18336 states, 15502 states have (on average 1.6459811637208102) internal successors, (25516), 15646 states have internal predecessors, (25516), 2471 states have call successors, (2471), 362 states have call predecessors, (2471), 362 states have return successors, (2471), 2327 states have call predecessors, (2471), 2471 states have call successors, (2471) [2023-12-15 19:51:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18336 states to 18336 states and 30458 transitions. [2023-12-15 19:51:14,792 INFO L78 Accepts]: Start accepts. Automaton has 18336 states and 30458 transitions. Word has length 380 [2023-12-15 19:51:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:14,792 INFO L495 AbstractCegarLoop]: Abstraction has 18336 states and 30458 transitions. [2023-12-15 19:51:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 19:51:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 18336 states and 30458 transitions. [2023-12-15 19:51:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-15 19:51:14,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:14,798 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:14,804 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 19:51:15,004 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 19:51:15,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:15,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1011258354, now seen corresponding path program 1 times [2023-12-15 19:51:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683544200] [2023-12-15 19:51:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:15,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688692726] [2023-12-15 19:51:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:15,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:15,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:15,033 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 19:51:15,054 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 19:51:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:15,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 19:51:15,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 4282 proven. 243 refuted. 0 times theorem prover too weak. 2319 trivial. 0 not checked. [2023-12-15 19:51:16,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 186 proven. 159 refuted. 0 times theorem prover too weak. 6499 trivial. 0 not checked. [2023-12-15 19:51:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683544200] [2023-12-15 19:51:17,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688692726] [2023-12-15 19:51:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688692726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:17,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2023-12-15 19:51:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444911899] [2023-12-15 19:51:17,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 19:51:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 19:51:17,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-12-15 19:51:17,231 INFO L87 Difference]: Start difference. First operand 18336 states and 30458 transitions. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (91), 4 states have call predecessors, (91), 8 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) [2023-12-15 19:51:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:19,344 INFO L93 Difference]: Finished difference Result 34160 states and 56548 transitions. [2023-12-15 19:51:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 19:51:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (91), 4 states have call predecessors, (91), 8 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) Word has length 381 [2023-12-15 19:51:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:19,378 INFO L225 Difference]: With dead ends: 34160 [2023-12-15 19:51:19,378 INFO L226 Difference]: Without dead ends: 16916 [2023-12-15 19:51:19,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=866, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 19:51:19,401 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 807 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:19,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 835 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:51:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16916 states. [2023-12-15 19:51:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16916 to 14446. [2023-12-15 19:51:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14446 states, 12867 states have (on average 1.6632470661381829) internal successors, (21401), 12943 states have internal predecessors, (21401), 1371 states have call successors, (1371), 207 states have call predecessors, (1371), 207 states have return successors, (1371), 1295 states have call predecessors, (1371), 1371 states have call successors, (1371) [2023-12-15 19:51:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14446 states to 14446 states and 24143 transitions. [2023-12-15 19:51:20,560 INFO L78 Accepts]: Start accepts. Automaton has 14446 states and 24143 transitions. Word has length 381 [2023-12-15 19:51:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:20,561 INFO L495 AbstractCegarLoop]: Abstraction has 14446 states and 24143 transitions. [2023-12-15 19:51:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 19 states have internal predecessors, (153), 6 states have call successors, (91), 4 states have call predecessors, (91), 8 states have return successors, (92), 6 states have call predecessors, (92), 6 states have call successors, (92) [2023-12-15 19:51:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 14446 states and 24143 transitions. [2023-12-15 19:51:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-15 19:51:20,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:20,567 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:20,588 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 19:51:20,774 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 19:51:20,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:20,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1896878519, now seen corresponding path program 1 times [2023-12-15 19:51:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231225831] [2023-12-15 19:51:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:20,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629314301] [2023-12-15 19:51:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:20,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:20,807 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 19:51:20,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 19:51:21,234 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:51:21,243 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 19:51:22,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:22,434 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-15 19:51:22,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-15 19:51:22,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-15 19:51:22,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:51:22,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:51:22,441 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 383 with TraceHistMax 59,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-15 19:51:22,443 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:22,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:51:22,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:51:22 BoogieIcfgContainer [2023-12-15 19:51:22,446 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:51:22,446 INFO L158 Benchmark]: Toolchain (without parser) took 64250.43ms. Allocated memory was 305.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 252.5MB in the beginning and 955.6MB in the end (delta: -703.1MB). Peak memory consumption was 640.2MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.68ms. Allocated memory is still 305.1MB. Free memory was 252.2MB in the beginning and 229.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.50ms. Allocated memory is still 305.1MB. Free memory was 229.4MB in the beginning and 221.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: Boogie Preprocessor took 109.62ms. Allocated memory is still 305.1MB. Free memory was 221.1MB in the beginning and 267.3MB in the end (delta: -46.2MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: RCFGBuilder took 732.70ms. Allocated memory is still 305.1MB. Free memory was 267.3MB in the beginning and 211.2MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,447 INFO L158 Benchmark]: TraceAbstraction took 62937.31ms. Allocated memory was 305.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 210.7MB in the beginning and 955.6MB in the end (delta: -744.9MB). Peak memory consumption was 597.8MB. Max. memory is 8.0GB. [2023-12-15 19:51:22,448 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 210.8MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 399.68ms. Allocated memory is still 305.1MB. Free memory was 252.2MB in the beginning and 229.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.50ms. Allocated memory is still 305.1MB. Free memory was 229.4MB in the beginning and 221.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 109.62ms. Allocated memory is still 305.1MB. Free memory was 221.1MB in the beginning and 267.3MB in the end (delta: -46.2MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * RCFGBuilder took 732.70ms. Allocated memory is still 305.1MB. Free memory was 267.3MB in the beginning and 211.2MB in the end (delta: 56.1MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 62937.31ms. Allocated memory was 305.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 210.7MB in the beginning and 955.6MB in the end (delta: -744.9MB). Peak memory consumption was 597.8MB. 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 analyzing trace of length 383 with TraceHistMax 59,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.9s, OverallIterations: 13, TraceHistogramMax: 59, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 8167 SdHoareTripleChecker+Valid, 30.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8001 mSDsluCounter, 13690 SdHoareTripleChecker+Invalid, 29.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10046 mSDsCounter, 2357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6965 IncrementalHoareTripleChecker+Invalid, 9326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2357 mSolverCounterUnsat, 3644 mSDtfsCounter, 6965 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6521 GetRequests, 6360 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18336occurred in iteration=11, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 14345 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 4551 NumberOfCodeBlocks, 4551 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6430 ConstructedInterpolants, 14 QuantifiedInterpolants, 29852 SizeOfPredicates, 48 NumberOfNonLiveVariables, 10475 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 115106/116348 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