/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-43.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:08:32,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:08:32,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:08:32,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:08:32,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:08:32,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:08:32,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:08:32,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:08:32,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:08:32,361 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:08:32,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:08:32,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:08:32,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:08:32,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:08:32,362 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:08:32,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:08:32,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:08:32,363 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:08:32,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:08:32,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:08:32,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:08:32,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:08:32,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:08:32,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:08:32,365 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:08:32,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:08:32,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:08:32,366 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:08:32,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:08:32,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:08:32,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:08:32,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:08:32,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:08:32,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:08:32,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:08:32,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:08:32,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:08:32,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:08:32,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:08:32,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:08:32,369 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:08:32,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:08:32,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:08:32,389 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:08:32,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:08:32,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:08:32,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:08:32,656 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:08:32,656 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:08:32,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-43.i [2023-12-16 04:08:33,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:08:34,114 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:08:34,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-43.i [2023-12-16 04:08:34,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adb753e1/69c1cbcdedc846afb813d1b00370f33d/FLAG881edd704 [2023-12-16 04:08:34,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6adb753e1/69c1cbcdedc846afb813d1b00370f33d [2023-12-16 04:08:34,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:08:34,145 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:08:34,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:08:34,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:08:34,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:08:34,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26249e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34, skipping insertion in model container [2023-12-16 04:08:34,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,196 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:08:34,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-43.i[916,929] [2023-12-16 04:08:34,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:08:34,522 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:08:34,530 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-43.i[916,929] [2023-12-16 04:08:34,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:08:34,632 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:08:34,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34 WrapperNode [2023-12-16 04:08:34,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:08:34,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:08:34,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:08:34,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:08:34,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,765 INFO L138 Inliner]: procedures = 26, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 689 [2023-12-16 04:08:34,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:08:34,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:08:34,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:08:34,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:08:34,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,887 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]. [2023-12-16 04:08:34,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:08:34,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:08:34,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:08:34,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:08:34,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (1/1) ... [2023-12-16 04:08:34,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:08:34,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:34,991 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) [2023-12-16 04:08:35,026 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 [2023-12-16 04:08:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:08:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:08:35,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:08:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:08:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:08:35,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:08:35,167 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:08:35,168 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:08:36,303 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:08:36,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:08:36,356 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:08:36,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:36 BoogieIcfgContainer [2023-12-16 04:08:36,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:08:36,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:08:36,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:08:36,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:08:36,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:08:34" (1/3) ... [2023-12-16 04:08:36,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c41e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:36, skipping insertion in model container [2023-12-16 04:08:36,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:08:34" (2/3) ... [2023-12-16 04:08:36,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c41e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:08:36, skipping insertion in model container [2023-12-16 04:08:36,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:08:36" (3/3) ... [2023-12-16 04:08:36,363 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-43.i [2023-12-16 04:08:36,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:08:36,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:08:36,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:08:36,427 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;@71db50e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:08:36,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:08:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 185 states have (on average 1.572972972972973) internal successors, (291), 186 states have internal predecessors, (291), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 04:08:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:36,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:36,450 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:36,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:36,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 294168156, now seen corresponding path program 1 times [2023-12-16 04:08:36,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:36,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445362513] [2023-12-16 04:08:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:36,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445362513] [2023-12-16 04:08:36,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:08:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466037926] [2023-12-16 04:08:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:36,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:36,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:36,714 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) [2023-12-16 04:08:36,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:08:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:37,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:08:37,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2023-12-16 04:08:37,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:37,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466037926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:37,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:37,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:08:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810775690] [2023-12-16 04:08:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:08:37,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:08:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:08:37,229 INFO L87 Difference]: Start difference. First operand has 262 states, 185 states have (on average 1.572972972972973) internal successors, (291), 186 states have internal predecessors, (291), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 04:08:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:37,306 INFO L93 Difference]: Finished difference Result 521 states and 950 transitions. [2023-12-16 04:08:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:08:37,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) Word has length 489 [2023-12-16 04:08:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:37,319 INFO L225 Difference]: With dead ends: 521 [2023-12-16 04:08:37,320 INFO L226 Difference]: Without dead ends: 260 [2023-12-16 04:08:37,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:08:37,329 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:37,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 430 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:08:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-16 04:08:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-16 04:08:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 184 states have (on average 1.548913043478261) internal successors, (285), 184 states have internal predecessors, (285), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 04:08:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 433 transitions. [2023-12-16 04:08:37,427 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 433 transitions. Word has length 489 [2023-12-16 04:08:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:37,429 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 433 transitions. [2023-12-16 04:08:37,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 04:08:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 433 transitions. [2023-12-16 04:08:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:37,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:37,439 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:37,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:37,647 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 [2023-12-16 04:08:37,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:37,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1221224908, now seen corresponding path program 1 times [2023-12-16 04:08:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:37,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533762258] [2023-12-16 04:08:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:37,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339129267] [2023-12-16 04:08:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:37,954 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) [2023-12-16 04:08:37,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:08:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:38,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:08:38,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:38,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533762258] [2023-12-16 04:08:38,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339129267] [2023-12-16 04:08:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339129267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:38,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:38,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:08:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967548499] [2023-12-16 04:08:38,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:38,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:08:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:08:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:08:38,390 INFO L87 Difference]: Start difference. First operand 260 states and 433 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:38,486 INFO L93 Difference]: Finished difference Result 563 states and 930 transitions. [2023-12-16 04:08:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:08:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:38,492 INFO L225 Difference]: With dead ends: 563 [2023-12-16 04:08:38,492 INFO L226 Difference]: Without dead ends: 304 [2023-12-16 04:08:38,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:08:38,495 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 93 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:38,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1307 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:08:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-16 04:08:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 262. [2023-12-16 04:08:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 186 states have (on average 1.543010752688172) internal successors, (287), 186 states have internal predecessors, (287), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 04:08:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 435 transitions. [2023-12-16 04:08:38,510 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 435 transitions. Word has length 489 [2023-12-16 04:08:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 435 transitions. [2023-12-16 04:08:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 435 transitions. [2023-12-16 04:08:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:38,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:38,516 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:38,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:38,723 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 [2023-12-16 04:08:38,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:38,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash -963059470, now seen corresponding path program 1 times [2023-12-16 04:08:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445926856] [2023-12-16 04:08:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:38,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:38,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326965050] [2023-12-16 04:08:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:38,786 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) [2023-12-16 04:08:38,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:08:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:39,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:08:39,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:39,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:39,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445926856] [2023-12-16 04:08:39,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326965050] [2023-12-16 04:08:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326965050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:39,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:39,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:08:39,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565607454] [2023-12-16 04:08:39,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:39,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:08:39,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:08:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:08:39,156 INFO L87 Difference]: Start difference. First operand 262 states and 435 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:39,218 INFO L93 Difference]: Finished difference Result 527 states and 874 transitions. [2023-12-16 04:08:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:08:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:39,221 INFO L225 Difference]: With dead ends: 527 [2023-12-16 04:08:39,221 INFO L226 Difference]: Without dead ends: 266 [2023-12-16 04:08:39,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:08:39,222 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 3 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1278 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:08:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-16 04:08:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2023-12-16 04:08:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 188 states have (on average 1.5372340425531914) internal successors, (289), 188 states have internal predecessors, (289), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 04:08:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 437 transitions. [2023-12-16 04:08:39,262 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 437 transitions. Word has length 489 [2023-12-16 04:08:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:39,265 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 437 transitions. [2023-12-16 04:08:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 437 transitions. [2023-12-16 04:08:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:39,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:39,269 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:39,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 04:08:39,476 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 [2023-12-16 04:08:39,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:39,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:39,479 INFO L85 PathProgramCache]: Analyzing trace with hash -962999888, now seen corresponding path program 1 times [2023-12-16 04:08:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36617980] [2023-12-16 04:08:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:39,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:39,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057664688] [2023-12-16 04:08:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:39,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:39,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:39,545 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) [2023-12-16 04:08:39,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:08:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:39,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:39,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:39,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36617980] [2023-12-16 04:08:39,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057664688] [2023-12-16 04:08:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057664688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:39,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338288268] [2023-12-16 04:08:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:39,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:39,966 INFO L87 Difference]: Start difference. First operand 264 states and 437 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:40,035 INFO L93 Difference]: Finished difference Result 790 states and 1309 transitions. [2023-12-16 04:08:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:40,039 INFO L225 Difference]: With dead ends: 790 [2023-12-16 04:08:40,039 INFO L226 Difference]: Without dead ends: 527 [2023-12-16 04:08:40,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:40,040 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 394 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:40,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1160 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:08:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-16 04:08:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 328. [2023-12-16 04:08:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 252 states have (on average 1.5992063492063493) internal successors, (403), 252 states have internal predecessors, (403), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 04:08:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 551 transitions. [2023-12-16 04:08:40,056 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 551 transitions. Word has length 489 [2023-12-16 04:08:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:40,057 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 551 transitions. [2023-12-16 04:08:40,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 551 transitions. [2023-12-16 04:08:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:40,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:40,060 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:40,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:40,267 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 [2023-12-16 04:08:40,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:40,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 998574770, now seen corresponding path program 1 times [2023-12-16 04:08:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:40,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163268854] [2023-12-16 04:08:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:40,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262999466] [2023-12-16 04:08:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:40,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:40,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:40,330 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) [2023-12-16 04:08:40,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:08:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:40,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:40,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163268854] [2023-12-16 04:08:40,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262999466] [2023-12-16 04:08:40,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262999466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:40,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:40,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816050185] [2023-12-16 04:08:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:40,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:40,668 INFO L87 Difference]: Start difference. First operand 328 states and 551 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:40,793 INFO L93 Difference]: Finished difference Result 852 states and 1432 transitions. [2023-12-16 04:08:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:40,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:40,796 INFO L225 Difference]: With dead ends: 852 [2023-12-16 04:08:40,796 INFO L226 Difference]: Without dead ends: 525 [2023-12-16 04:08:40,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:40,797 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 212 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:40,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 850 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-16 04:08:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2023-12-16 04:08:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 438 states have internal predecessors, (711), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-16 04:08:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 875 transitions. [2023-12-16 04:08:40,818 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 875 transitions. Word has length 489 [2023-12-16 04:08:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:40,819 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 875 transitions. [2023-12-16 04:08:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 875 transitions. [2023-12-16 04:08:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:40,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:40,823 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:40,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:41,030 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 [2023-12-16 04:08:41,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:41,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash -157044692, now seen corresponding path program 1 times [2023-12-16 04:08:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516091259] [2023-12-16 04:08:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:41,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:41,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835025068] [2023-12-16 04:08:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:41,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:41,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:41,170 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) [2023-12-16 04:08:41,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:08:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:41,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:08:41,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:41,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516091259] [2023-12-16 04:08:41,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835025068] [2023-12-16 04:08:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835025068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:08:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013915062] [2023-12-16 04:08:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:41,721 INFO L87 Difference]: Start difference. First operand 522 states and 875 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:41,916 INFO L93 Difference]: Finished difference Result 1309 states and 2170 transitions. [2023-12-16 04:08:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:41,921 INFO L225 Difference]: With dead ends: 1309 [2023-12-16 04:08:41,921 INFO L226 Difference]: Without dead ends: 788 [2023-12-16 04:08:41,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:41,923 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 421 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:41,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1146 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:08:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-16 04:08:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 782. [2023-12-16 04:08:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 613 states have (on average 1.5579119086460032) internal successors, (955), 615 states have internal predecessors, (955), 164 states have call successors, (164), 4 states have call predecessors, (164), 4 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-16 04:08:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1283 transitions. [2023-12-16 04:08:41,995 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1283 transitions. Word has length 489 [2023-12-16 04:08:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:41,996 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1283 transitions. [2023-12-16 04:08:41,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1283 transitions. [2023-12-16 04:08:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:41,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:41,999 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:42,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:42,206 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 [2023-12-16 04:08:42,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:42,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 522227562, now seen corresponding path program 1 times [2023-12-16 04:08:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:42,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732791750] [2023-12-16 04:08:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:42,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888313741] [2023-12-16 04:08:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:42,268 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) [2023-12-16 04:08:42,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:08:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:42,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:42,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:08:43,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:08:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732791750] [2023-12-16 04:08:43,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888313741] [2023-12-16 04:08:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888313741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:08:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:08:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:08:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850224682] [2023-12-16 04:08:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:08:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:08:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:08:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:43,706 INFO L87 Difference]: Start difference. First operand 782 states and 1283 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:43,835 INFO L93 Difference]: Finished difference Result 2340 states and 3839 transitions. [2023-12-16 04:08:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:08:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 489 [2023-12-16 04:08:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:43,861 INFO L225 Difference]: With dead ends: 2340 [2023-12-16 04:08:43,861 INFO L226 Difference]: Without dead ends: 1559 [2023-12-16 04:08:43,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:08:43,864 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 178 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:43,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 827 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:08:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2023-12-16 04:08:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1549. [2023-12-16 04:08:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1212 states have (on average 1.5429042904290429) internal successors, (1870), 1216 states have internal predecessors, (1870), 328 states have call successors, (328), 8 states have call predecessors, (328), 8 states have return successors, (328), 324 states have call predecessors, (328), 328 states have call successors, (328) [2023-12-16 04:08:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2526 transitions. [2023-12-16 04:08:43,950 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2526 transitions. Word has length 489 [2023-12-16 04:08:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:43,950 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2526 transitions. [2023-12-16 04:08:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:08:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2526 transitions. [2023-12-16 04:08:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:43,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:43,954 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:43,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 04:08:44,162 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 [2023-12-16 04:08:44,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:44,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 499595308, now seen corresponding path program 1 times [2023-12-16 04:08:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561404013] [2023-12-16 04:08:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:44,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526562194] [2023-12-16 04:08:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:44,212 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) [2023-12-16 04:08:44,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:08:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:44,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:44,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4875 proven. 72 refuted. 0 times theorem prover too weak. 5857 trivial. 0 not checked. [2023-12-16 04:08:44,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 147 proven. 72 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561404013] [2023-12-16 04:08:44,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526562194] [2023-12-16 04:08:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526562194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:44,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:44,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:08:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708765965] [2023-12-16 04:08:44,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:44,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:08:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:44,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:08:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:44,912 INFO L87 Difference]: Start difference. First operand 1549 states and 2526 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-16 04:08:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:45,533 INFO L93 Difference]: Finished difference Result 3206 states and 5205 transitions. [2023-12-16 04:08:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:08:45,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 489 [2023-12-16 04:08:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:45,541 INFO L225 Difference]: With dead ends: 3206 [2023-12-16 04:08:45,541 INFO L226 Difference]: Without dead ends: 1658 [2023-12-16 04:08:45,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 970 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:08:45,548 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 302 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:45,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1130 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:08:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-12-16 04:08:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1639. [2023-12-16 04:08:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1249 states have (on average 1.5172137710168134) internal successors, (1895), 1254 states have internal predecessors, (1895), 377 states have call successors, (377), 12 states have call predecessors, (377), 12 states have return successors, (377), 372 states have call predecessors, (377), 377 states have call successors, (377) [2023-12-16 04:08:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2649 transitions. [2023-12-16 04:08:45,652 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2649 transitions. Word has length 489 [2023-12-16 04:08:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:45,653 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2649 transitions. [2023-12-16 04:08:45,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-16 04:08:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2649 transitions. [2023-12-16 04:08:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-16 04:08:45,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:45,658 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:45,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:45,866 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 [2023-12-16 04:08:45,867 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:45,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash 916991914, now seen corresponding path program 1 times [2023-12-16 04:08:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:45,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428593688] [2023-12-16 04:08:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:45,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:45,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884718251] [2023-12-16 04:08:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:45,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:45,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:45,915 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) [2023-12-16 04:08:45,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:08:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:46,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:08:46,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4353 proven. 159 refuted. 0 times theorem prover too weak. 6292 trivial. 0 not checked. [2023-12-16 04:08:47,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 60 proven. 159 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:47,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428593688] [2023-12-16 04:08:47,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884718251] [2023-12-16 04:08:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884718251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:47,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 04:08:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014979449] [2023-12-16 04:08:47,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:47,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:08:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:08:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:08:47,427 INFO L87 Difference]: Start difference. First operand 1639 states and 2649 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2023-12-16 04:08:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:48,107 INFO L93 Difference]: Finished difference Result 3265 states and 5227 transitions. [2023-12-16 04:08:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:08:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) Word has length 489 [2023-12-16 04:08:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:48,114 INFO L225 Difference]: With dead ends: 3265 [2023-12-16 04:08:48,115 INFO L226 Difference]: Without dead ends: 1701 [2023-12-16 04:08:48,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:08:48,118 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 608 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:48,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1056 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:08:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2023-12-16 04:08:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1675. [2023-12-16 04:08:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1276 states have (on average 1.5031347962382444) internal successors, (1918), 1281 states have internal predecessors, (1918), 377 states have call successors, (377), 21 states have call predecessors, (377), 21 states have return successors, (377), 372 states have call predecessors, (377), 377 states have call successors, (377) [2023-12-16 04:08:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2672 transitions. [2023-12-16 04:08:48,247 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2672 transitions. Word has length 489 [2023-12-16 04:08:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:48,248 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2672 transitions. [2023-12-16 04:08:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 3 states have call predecessors, (128), 3 states have call successors, (128) [2023-12-16 04:08:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2672 transitions. [2023-12-16 04:08:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:08:48,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:48,252 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:48,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 04:08:48,460 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 [2023-12-16 04:08:48,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1424904076, now seen corresponding path program 1 times [2023-12-16 04:08:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839428882] [2023-12-16 04:08:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:48,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801137920] [2023-12-16 04:08:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:48,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:48,522 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) [2023-12-16 04:08:48,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:08:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:48,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:48,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 2395 proven. 192 refuted. 0 times theorem prover too weak. 8217 trivial. 0 not checked. [2023-12-16 04:08:49,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:49,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839428882] [2023-12-16 04:08:49,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801137920] [2023-12-16 04:08:49,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801137920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:49,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:08:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034941538] [2023-12-16 04:08:49,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:08:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:08:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:49,679 INFO L87 Difference]: Start difference. First operand 1675 states and 2672 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 04:08:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:50,144 INFO L93 Difference]: Finished difference Result 2803 states and 4440 transitions. [2023-12-16 04:08:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:08:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 490 [2023-12-16 04:08:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:50,150 INFO L225 Difference]: With dead ends: 2803 [2023-12-16 04:08:50,150 INFO L226 Difference]: Without dead ends: 1207 [2023-12-16 04:08:50,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 972 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:08:50,153 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 242 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:50,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 848 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:08:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-12-16 04:08:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1179. [2023-12-16 04:08:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 811 states have (on average 1.43403205918619) internal successors, (1163), 812 states have internal predecessors, (1163), 345 states have call successors, (345), 22 states have call predecessors, (345), 22 states have return successors, (345), 344 states have call predecessors, (345), 345 states have call successors, (345) [2023-12-16 04:08:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1853 transitions. [2023-12-16 04:08:50,211 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1853 transitions. Word has length 490 [2023-12-16 04:08:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:50,212 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1853 transitions. [2023-12-16 04:08:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 04:08:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1853 transitions. [2023-12-16 04:08:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 04:08:50,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:50,215 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:50,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:50,423 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 [2023-12-16 04:08:50,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:50,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 270697716, now seen corresponding path program 1 times [2023-12-16 04:08:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589826084] [2023-12-16 04:08:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:50,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516492223] [2023-12-16 04:08:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:50,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:50,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:50,509 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) [2023-12-16 04:08:50,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:08:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:50,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:50,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5235 proven. 132 refuted. 0 times theorem prover too weak. 5437 trivial. 0 not checked. [2023-12-16 04:08:51,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589826084] [2023-12-16 04:08:51,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516492223] [2023-12-16 04:08:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516492223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:51,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 04:08:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604147745] [2023-12-16 04:08:51,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:51,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:08:51,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:08:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:08:51,626 INFO L87 Difference]: Start difference. First operand 1179 states and 1853 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-12-16 04:08:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:52,074 INFO L93 Difference]: Finished difference Result 2321 states and 3617 transitions. [2023-12-16 04:08:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:08:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) Word has length 492 [2023-12-16 04:08:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:52,081 INFO L225 Difference]: With dead ends: 2321 [2023-12-16 04:08:52,081 INFO L226 Difference]: Without dead ends: 1225 [2023-12-16 04:08:52,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:08:52,084 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 267 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:52,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 863 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:08:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-16 04:08:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 970. [2023-12-16 04:08:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 677 states have (on average 1.4372230428360413) internal successors, (973), 679 states have internal predecessors, (973), 271 states have call successors, (271), 21 states have call predecessors, (271), 21 states have return successors, (271), 269 states have call predecessors, (271), 271 states have call successors, (271) [2023-12-16 04:08:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1515 transitions. [2023-12-16 04:08:52,158 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1515 transitions. Word has length 492 [2023-12-16 04:08:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1515 transitions. [2023-12-16 04:08:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-12-16 04:08:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1515 transitions. [2023-12-16 04:08:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 04:08:52,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:52,162 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:52,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:52,369 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 [2023-12-16 04:08:52,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:52,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1893849860, now seen corresponding path program 1 times [2023-12-16 04:08:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268438618] [2023-12-16 04:08:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:52,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:52,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39024110] [2023-12-16 04:08:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:52,410 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) [2023-12-16 04:08:52,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:08:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:52,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:08:52,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4545 proven. 63 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2023-12-16 04:08:52,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 156 proven. 63 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:53,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268438618] [2023-12-16 04:08:53,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39024110] [2023-12-16 04:08:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39024110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:53,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:08:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210623606] [2023-12-16 04:08:53,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:53,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:08:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:08:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:08:53,187 INFO L87 Difference]: Start difference. First operand 970 states and 1515 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 04:08:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:53,675 INFO L93 Difference]: Finished difference Result 1893 states and 2934 transitions. [2023-12-16 04:08:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:08:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 492 [2023-12-16 04:08:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:53,681 INFO L225 Difference]: With dead ends: 1893 [2023-12-16 04:08:53,681 INFO L226 Difference]: Without dead ends: 1010 [2023-12-16 04:08:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 976 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:08:53,684 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 716 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 867 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:08:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-16 04:08:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 982. [2023-12-16 04:08:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 686 states have (on average 1.4256559766763848) internal successors, (978), 688 states have internal predecessors, (978), 271 states have call successors, (271), 24 states have call predecessors, (271), 24 states have return successors, (271), 269 states have call predecessors, (271), 271 states have call successors, (271) [2023-12-16 04:08:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1520 transitions. [2023-12-16 04:08:53,748 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1520 transitions. Word has length 492 [2023-12-16 04:08:53,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:53,749 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1520 transitions. [2023-12-16 04:08:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-16 04:08:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1520 transitions. [2023-12-16 04:08:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 04:08:53,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:53,752 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:53,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:53,960 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 [2023-12-16 04:08:53,962 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:53,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1645703366, now seen corresponding path program 1 times [2023-12-16 04:08:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352428522] [2023-12-16 04:08:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:54,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:54,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643897865] [2023-12-16 04:08:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:54,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:54,025 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) [2023-12-16 04:08:54,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:08:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:54,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:08:54,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5235 proven. 132 refuted. 0 times theorem prover too weak. 5437 trivial. 0 not checked. [2023-12-16 04:08:54,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:55,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352428522] [2023-12-16 04:08:55,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643897865] [2023-12-16 04:08:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643897865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:55,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:55,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 04:08:55,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030440247] [2023-12-16 04:08:55,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:55,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:08:55,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:08:55,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:08:55,278 INFO L87 Difference]: Start difference. First operand 982 states and 1520 transitions. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-12-16 04:08:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:56,798 INFO L93 Difference]: Finished difference Result 2011 states and 3092 transitions. [2023-12-16 04:08:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 04:08:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) Word has length 492 [2023-12-16 04:08:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:56,803 INFO L225 Difference]: With dead ends: 2011 [2023-12-16 04:08:56,803 INFO L226 Difference]: Without dead ends: 1116 [2023-12-16 04:08:56,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:08:56,806 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1247 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:56,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1292 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 04:08:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-12-16 04:08:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 845. [2023-12-16 04:08:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 602 states have (on average 1.4335548172757475) internal successors, (863), 603 states have internal predecessors, (863), 222 states have call successors, (222), 20 states have call predecessors, (222), 20 states have return successors, (222), 221 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-16 04:08:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1307 transitions. [2023-12-16 04:08:56,977 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1307 transitions. Word has length 492 [2023-12-16 04:08:56,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:56,978 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1307 transitions. [2023-12-16 04:08:56,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 3 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2023-12-16 04:08:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1307 transitions. [2023-12-16 04:08:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-16 04:08:57,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:57,003 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:57,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:08:57,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:57,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1998791748, now seen corresponding path program 1 times [2023-12-16 04:08:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:57,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808103395] [2023-12-16 04:08:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:57,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:57,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648779773] [2023-12-16 04:08:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:57,361 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:57,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:08:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:57,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:08:57,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:08:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4285 proven. 57 refuted. 0 times theorem prover too weak. 6462 trivial. 0 not checked. [2023-12-16 04:08:58,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:08:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 162 proven. 57 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:08:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:08:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808103395] [2023-12-16 04:08:58,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:08:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648779773] [2023-12-16 04:08:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648779773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:08:58,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:08:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 04:08:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794992419] [2023-12-16 04:08:58,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:08:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:08:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:08:58,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:08:58,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:08:58,424 INFO L87 Difference]: Start difference. First operand 845 states and 1307 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-16 04:08:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:08:59,039 INFO L93 Difference]: Finished difference Result 1649 states and 2536 transitions. [2023-12-16 04:08:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:08:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 492 [2023-12-16 04:08:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:08:59,044 INFO L225 Difference]: With dead ends: 1649 [2023-12-16 04:08:59,044 INFO L226 Difference]: Without dead ends: 881 [2023-12-16 04:08:59,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 974 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:08:59,046 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 600 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:08:59,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1154 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:08:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-16 04:08:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 853. [2023-12-16 04:08:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 607 states have (on average 1.4168039538714992) internal successors, (860), 608 states have internal predecessors, (860), 222 states have call successors, (222), 23 states have call predecessors, (222), 23 states have return successors, (222), 221 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-16 04:08:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1304 transitions. [2023-12-16 04:08:59,119 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1304 transitions. Word has length 492 [2023-12-16 04:08:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:08:59,120 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1304 transitions. [2023-12-16 04:08:59,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-16 04:08:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1304 transitions. [2023-12-16 04:08:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:08:59,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:08:59,123 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:08:59,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:08:59,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:59,331 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:08:59,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:08:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash -428957042, now seen corresponding path program 1 times [2023-12-16 04:08:59,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:08:59,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759677940] [2023-12-16 04:08:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:59,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:08:59,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:08:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257969517] [2023-12-16 04:08:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:08:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:08:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:08:59,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:08:59,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:08:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:08:59,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:08:59,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:09:00,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:00,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759677940] [2023-12-16 04:09:00,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257969517] [2023-12-16 04:09:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257969517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811467946] [2023-12-16 04:09:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:09:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:09:00,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:00,755 INFO L87 Difference]: Start difference. First operand 853 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:00,886 INFO L93 Difference]: Finished difference Result 1565 states and 2401 transitions. [2023-12-16 04:09:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:00,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 493 [2023-12-16 04:09:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:00,890 INFO L225 Difference]: With dead ends: 1565 [2023-12-16 04:09:00,891 INFO L226 Difference]: Without dead ends: 857 [2023-12-16 04:09:00,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:09:00,894 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 568 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:00,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 784 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:09:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-16 04:09:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 853. [2023-12-16 04:09:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 607 states have (on average 1.4052718286655683) internal successors, (853), 608 states have internal predecessors, (853), 222 states have call successors, (222), 23 states have call predecessors, (222), 23 states have return successors, (222), 221 states have call predecessors, (222), 222 states have call successors, (222) [2023-12-16 04:09:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1297 transitions. [2023-12-16 04:09:00,959 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1297 transitions. Word has length 493 [2023-12-16 04:09:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:00,959 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1297 transitions. [2023-12-16 04:09:00,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1297 transitions. [2023-12-16 04:09:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:09:00,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:00,962 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:00,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:01,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 04:09:01,170 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:01,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash -5310320, now seen corresponding path program 1 times [2023-12-16 04:09:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080222805] [2023-12-16 04:09:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:01,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19156027] [2023-12-16 04:09:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:01,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:01,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:01,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:09:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:01,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:09:01,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:09:02,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:02,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080222805] [2023-12-16 04:09:02,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:02,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19156027] [2023-12-16 04:09:02,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19156027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:02,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:09:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866623975] [2023-12-16 04:09:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:09:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:09:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:09:02,788 INFO L87 Difference]: Start difference. First operand 853 states and 1297 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:03,815 INFO L93 Difference]: Finished difference Result 2384 states and 3615 transitions. [2023-12-16 04:09:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:09:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 493 [2023-12-16 04:09:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:03,822 INFO L225 Difference]: With dead ends: 2384 [2023-12-16 04:09:03,822 INFO L226 Difference]: Without dead ends: 1676 [2023-12-16 04:09:03,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:09:03,824 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1592 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:03,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1777 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:09:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2023-12-16 04:09:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1081. [2023-12-16 04:09:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 819 states have (on average 1.4273504273504274) internal successors, (1169), 821 states have internal predecessors, (1169), 235 states have call successors, (235), 26 states have call predecessors, (235), 26 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2023-12-16 04:09:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1639 transitions. [2023-12-16 04:09:03,900 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1639 transitions. Word has length 493 [2023-12-16 04:09:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:03,900 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1639 transitions. [2023-12-16 04:09:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1639 transitions. [2023-12-16 04:09:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:09:03,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:03,904 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:03,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:04,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:09:04,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:04,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1745883056, now seen corresponding path program 1 times [2023-12-16 04:09:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374121251] [2023-12-16 04:09:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:04,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:04,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561524055] [2023-12-16 04:09:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:04,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:04,170 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:04,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:09:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:04,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:09:04,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 1935 proven. 198 refuted. 0 times theorem prover too weak. 8671 trivial. 0 not checked. [2023-12-16 04:09:05,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 21 proven. 198 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:09:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374121251] [2023-12-16 04:09:05,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561524055] [2023-12-16 04:09:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561524055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:05,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:05,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 04:09:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043616749] [2023-12-16 04:09:05,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:09:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:05,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:09:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:09:05,709 INFO L87 Difference]: Start difference. First operand 1081 states and 1639 transitions. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-16 04:09:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:06,320 INFO L93 Difference]: Finished difference Result 2260 states and 3383 transitions. [2023-12-16 04:09:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:09:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 493 [2023-12-16 04:09:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:06,325 INFO L225 Difference]: With dead ends: 2260 [2023-12-16 04:09:06,325 INFO L226 Difference]: Without dead ends: 1328 [2023-12-16 04:09:06,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 975 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:09:06,327 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 395 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1372 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:09:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-12-16 04:09:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1272. [2023-12-16 04:09:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 984 states have (on average 1.4115853658536586) internal successors, (1389), 989 states have internal predecessors, (1389), 253 states have call successors, (253), 34 states have call predecessors, (253), 34 states have return successors, (253), 248 states have call predecessors, (253), 253 states have call successors, (253) [2023-12-16 04:09:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1895 transitions. [2023-12-16 04:09:06,404 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1895 transitions. Word has length 493 [2023-12-16 04:09:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:06,405 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1895 transitions. [2023-12-16 04:09:06,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-16 04:09:06,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1895 transitions. [2023-12-16 04:09:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:09:06,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:06,408 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:06,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-16 04:09:06,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 04:09:06,617 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 716571790, now seen corresponding path program 1 times [2023-12-16 04:09:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27063424] [2023-12-16 04:09:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:06,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273608750] [2023-12-16 04:09:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:06,677 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:06,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:09:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:07,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:09:07,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 3219 proven. 180 refuted. 0 times theorem prover too weak. 7405 trivial. 0 not checked. [2023-12-16 04:09:08,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 39 proven. 180 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:09:09,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27063424] [2023-12-16 04:09:09,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273608750] [2023-12-16 04:09:09,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273608750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:09,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:09,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 04:09:09,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925102036] [2023-12-16 04:09:09,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:09,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:09:09,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:09:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:09:09,053 INFO L87 Difference]: Start difference. First operand 1272 states and 1895 transitions. Second operand has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 4 states have call successors, (148), 3 states have call predecessors, (148), 5 states have return successors, (148), 4 states have call predecessors, (148), 4 states have call successors, (148) [2023-12-16 04:09:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:11,733 INFO L93 Difference]: Finished difference Result 4056 states and 6031 transitions. [2023-12-16 04:09:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 04:09:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 4 states have call successors, (148), 3 states have call predecessors, (148), 5 states have return successors, (148), 4 states have call predecessors, (148), 4 states have call successors, (148) Word has length 493 [2023-12-16 04:09:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:11,743 INFO L225 Difference]: With dead ends: 4056 [2023-12-16 04:09:11,743 INFO L226 Difference]: Without dead ends: 2941 [2023-12-16 04:09:11,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 977 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 04:09:11,746 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 3789 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3817 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:11,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3817 Valid, 3130 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 04:09:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2023-12-16 04:09:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2281. [2023-12-16 04:09:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1838 states have (on average 1.4461371055495102) internal successors, (2658), 1848 states have internal predecessors, (2658), 385 states have call successors, (385), 57 states have call predecessors, (385), 57 states have return successors, (385), 375 states have call predecessors, (385), 385 states have call successors, (385) [2023-12-16 04:09:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3428 transitions. [2023-12-16 04:09:11,889 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3428 transitions. Word has length 493 [2023-12-16 04:09:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:11,890 INFO L495 AbstractCegarLoop]: Abstraction has 2281 states and 3428 transitions. [2023-12-16 04:09:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 4 states have call successors, (148), 3 states have call predecessors, (148), 5 states have return successors, (148), 4 states have call predecessors, (148), 4 states have call successors, (148) [2023-12-16 04:09:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3428 transitions. [2023-12-16 04:09:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:09:11,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:11,893 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:11,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 04:09:12,102 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:12,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash 962040334, now seen corresponding path program 1 times [2023-12-16 04:09:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108842249] [2023-12-16 04:09:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:12,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123380225] [2023-12-16 04:09:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:12,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:12,440 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:12,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:09:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:13,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:09:13,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5673 proven. 180 refuted. 0 times theorem prover too weak. 4951 trivial. 0 not checked. [2023-12-16 04:09:13,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 252 proven. 183 refuted. 0 times theorem prover too weak. 10369 trivial. 0 not checked. [2023-12-16 04:09:14,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108842249] [2023-12-16 04:09:14,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123380225] [2023-12-16 04:09:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123380225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:14,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:14,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2023-12-16 04:09:14,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581543319] [2023-12-16 04:09:14,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:09:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:09:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:09:14,219 INFO L87 Difference]: Start difference. First operand 2281 states and 3428 transitions. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 5 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) [2023-12-16 04:09:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:17,785 INFO L93 Difference]: Finished difference Result 7759 states and 11500 transitions. [2023-12-16 04:09:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 04:09:17,785 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 5 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) Word has length 493 [2023-12-16 04:09:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:17,840 INFO L225 Difference]: With dead ends: 7759 [2023-12-16 04:09:17,840 INFO L226 Difference]: Without dead ends: 5639 [2023-12-16 04:09:17,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=512, Invalid=1294, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:09:17,845 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1708 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3401 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 04:09:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2023-12-16 04:09:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5053. [2023-12-16 04:09:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 4154 states have (on average 1.4342802118440057) internal successors, (5958), 4188 states have internal predecessors, (5958), 758 states have call successors, (758), 140 states have call predecessors, (758), 140 states have return successors, (758), 724 states have call predecessors, (758), 758 states have call successors, (758) [2023-12-16 04:09:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 7474 transitions. [2023-12-16 04:09:18,218 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 7474 transitions. Word has length 493 [2023-12-16 04:09:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:18,219 INFO L495 AbstractCegarLoop]: Abstraction has 5053 states and 7474 transitions. [2023-12-16 04:09:18,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 5 states have call successors, (106), 3 states have call predecessors, (106), 7 states have return successors, (107), 5 states have call predecessors, (107), 5 states have call successors, (107) [2023-12-16 04:09:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 7474 transitions. [2023-12-16 04:09:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-16 04:09:18,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:18,225 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:18,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:18,433 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:18,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 480960076, now seen corresponding path program 1 times [2023-12-16 04:09:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:18,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447258258] [2023-12-16 04:09:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:18,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618515036] [2023-12-16 04:09:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:18,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:18,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:18,538 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:18,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:09:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:18,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:09:19,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4825 proven. 147 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2023-12-16 04:09:19,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 72 proven. 147 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:09:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447258258] [2023-12-16 04:09:19,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618515036] [2023-12-16 04:09:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618515036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:19,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 04:09:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161190518] [2023-12-16 04:09:19,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:09:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:09:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:09:19,826 INFO L87 Difference]: Start difference. First operand 5053 states and 7474 transitions. Second operand has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2023-12-16 04:09:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:20,583 INFO L93 Difference]: Finished difference Result 8753 states and 12907 transitions. [2023-12-16 04:09:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:09:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) Word has length 493 [2023-12-16 04:09:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:20,593 INFO L225 Difference]: With dead ends: 8753 [2023-12-16 04:09:20,593 INFO L226 Difference]: Without dead ends: 3873 [2023-12-16 04:09:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:09:20,599 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 568 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1244 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:09:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2023-12-16 04:09:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3729. [2023-12-16 04:09:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3018 states have (on average 1.4022531477799867) internal successors, (4232), 3040 states have internal predecessors, (4232), 597 states have call successors, (597), 113 states have call predecessors, (597), 113 states have return successors, (597), 575 states have call predecessors, (597), 597 states have call successors, (597) [2023-12-16 04:09:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5426 transitions. [2023-12-16 04:09:20,825 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5426 transitions. Word has length 493 [2023-12-16 04:09:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:20,827 INFO L495 AbstractCegarLoop]: Abstraction has 3729 states and 5426 transitions. [2023-12-16 04:09:20,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 3 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 3 states have call predecessors, (124), 3 states have call successors, (124) [2023-12-16 04:09:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5426 transitions. [2023-12-16 04:09:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 04:09:20,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:20,832 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:20,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:21,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:21,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:21,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2123158423, now seen corresponding path program 1 times [2023-12-16 04:09:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:21,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967814505] [2023-12-16 04:09:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:21,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:21,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:21,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494063489] [2023-12-16 04:09:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:21,084 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:21,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 04:09:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:21,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:09:21,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 3025 proven. 183 refuted. 0 times theorem prover too weak. 7596 trivial. 0 not checked. [2023-12-16 04:09:22,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 36 proven. 183 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:09:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967814505] [2023-12-16 04:09:23,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:23,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494063489] [2023-12-16 04:09:23,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494063489] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:23,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:23,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 04:09:23,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637522193] [2023-12-16 04:09:23,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 04:09:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 04:09:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:09:23,238 INFO L87 Difference]: Start difference. First operand 3729 states and 5426 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-16 04:09:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:26,719 INFO L93 Difference]: Finished difference Result 11015 states and 16027 transitions. [2023-12-16 04:09:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 04:09:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 494 [2023-12-16 04:09:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:26,734 INFO L225 Difference]: With dead ends: 11015 [2023-12-16 04:09:26,734 INFO L226 Difference]: Without dead ends: 7463 [2023-12-16 04:09:26,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 975 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 04:09:26,741 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1526 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:26,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2046 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 04:09:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2023-12-16 04:09:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 2864. [2023-12-16 04:09:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2271 states have (on average 1.392338177014531) internal successors, (3162), 2282 states have internal predecessors, (3162), 489 states have call successors, (489), 103 states have call predecessors, (489), 103 states have return successors, (489), 478 states have call predecessors, (489), 489 states have call successors, (489) [2023-12-16 04:09:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4140 transitions. [2023-12-16 04:09:27,008 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4140 transitions. Word has length 494 [2023-12-16 04:09:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:27,009 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4140 transitions. [2023-12-16 04:09:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-16 04:09:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4140 transitions. [2023-12-16 04:09:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-16 04:09:27,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:27,013 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:27,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:27,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:27,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:27,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 94572313, now seen corresponding path program 1 times [2023-12-16 04:09:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300882447] [2023-12-16 04:09:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:27,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:27,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557441477] [2023-12-16 04:09:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:27,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:27,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:27,265 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:27,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 04:09:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:27,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:09:27,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 7257 proven. 360 refuted. 0 times theorem prover too weak. 3187 trivial. 0 not checked. [2023-12-16 04:09:29,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 123 proven. 96 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 04:09:30,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:30,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300882447] [2023-12-16 04:09:30,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:30,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557441477] [2023-12-16 04:09:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557441477] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:09:30,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:09:30,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2023-12-16 04:09:30,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989236718] [2023-12-16 04:09:30,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:30,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:09:30,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:09:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:09:30,171 INFO L87 Difference]: Start difference. First operand 2864 states and 4140 transitions. Second operand has 16 states, 16 states have (on average 13.8125) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (127), 4 states have call predecessors, (127), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) [2023-12-16 04:09:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:33,492 INFO L93 Difference]: Finished difference Result 5741 states and 8216 transitions. [2023-12-16 04:09:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 04:09:33,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.8125) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (127), 4 states have call predecessors, (127), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) Word has length 494 [2023-12-16 04:09:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:33,520 INFO L225 Difference]: With dead ends: 5741 [2023-12-16 04:09:33,520 INFO L226 Difference]: Without dead ends: 3054 [2023-12-16 04:09:33,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2023-12-16 04:09:33,532 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 718 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:33,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1134 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 04:09:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2023-12-16 04:09:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2882. [2023-12-16 04:09:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2295 states have (on average 1.380392156862745) internal successors, (3168), 2306 states have internal predecessors, (3168), 471 states have call successors, (471), 115 states have call predecessors, (471), 115 states have return successors, (471), 460 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-16 04:09:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4110 transitions. [2023-12-16 04:09:34,092 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4110 transitions. Word has length 494 [2023-12-16 04:09:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:34,093 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4110 transitions. [2023-12-16 04:09:34,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.8125) internal successors, (221), 16 states have internal predecessors, (221), 5 states have call successors, (127), 4 states have call predecessors, (127), 8 states have return successors, (128), 5 states have call predecessors, (128), 5 states have call successors, (128) [2023-12-16 04:09:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4110 transitions. [2023-12-16 04:09:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-16 04:09:34,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:34,110 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:34,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:34,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:34,333 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:34,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash -418507459, now seen corresponding path program 1 times [2023-12-16 04:09:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:34,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719536224] [2023-12-16 04:09:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:34,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109510110] [2023-12-16 04:09:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:34,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:34,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:34,426 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:34,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-16 04:09:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:34,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:09:34,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 04:09:34,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:09:34,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719536224] [2023-12-16 04:09:34,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:34,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109510110] [2023-12-16 04:09:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109510110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:09:34,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:09:34,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:09:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848514731] [2023-12-16 04:09:34,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:09:34,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:09:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:34,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:09:34,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:34,984 INFO L87 Difference]: Start difference. First operand 2882 states and 4110 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:35,564 INFO L93 Difference]: Finished difference Result 4823 states and 6947 transitions. [2023-12-16 04:09:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:09:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 496 [2023-12-16 04:09:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:35,571 INFO L225 Difference]: With dead ends: 4823 [2023-12-16 04:09:35,571 INFO L226 Difference]: Without dead ends: 3089 [2023-12-16 04:09:35,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:09:35,576 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 380 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:35,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 765 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:09:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2023-12-16 04:09:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3083. [2023-12-16 04:09:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2496 states have (on average 1.391025641025641) internal successors, (3472), 2507 states have internal predecessors, (3472), 471 states have call successors, (471), 115 states have call predecessors, (471), 115 states have return successors, (471), 460 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-16 04:09:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4414 transitions. [2023-12-16 04:09:35,798 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4414 transitions. Word has length 496 [2023-12-16 04:09:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:35,799 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4414 transitions. [2023-12-16 04:09:35,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 04:09:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4414 transitions. [2023-12-16 04:09:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-16 04:09:35,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:35,803 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:35,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:36,012 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:36,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash -693267073, now seen corresponding path program 1 times [2023-12-16 04:09:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:36,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316785711] [2023-12-16 04:09:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:36,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:36,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091696054] [2023-12-16 04:09:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:36,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:36,054 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:36,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-16 04:09:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:09:36,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:09:36,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:09:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4353 proven. 159 refuted. 0 times theorem prover too weak. 6292 trivial. 0 not checked. [2023-12-16 04:09:37,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:09:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:09:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316785711] [2023-12-16 04:09:38,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:09:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091696054] [2023-12-16 04:09:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091696054] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:09:38,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:09:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-16 04:09:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753915451] [2023-12-16 04:09:38,046 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:09:38,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:09:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:09:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:09:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:09:38,047 INFO L87 Difference]: Start difference. First operand 3083 states and 4414 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 04:09:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:09:39,586 INFO L93 Difference]: Finished difference Result 7781 states and 11258 transitions. [2023-12-16 04:09:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:09:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 496 [2023-12-16 04:09:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:09:39,612 INFO L225 Difference]: With dead ends: 7781 [2023-12-16 04:09:39,613 INFO L226 Difference]: Without dead ends: 4887 [2023-12-16 04:09:39,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:09:39,632 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 811 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:09:39,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1151 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 04:09:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4887 states. [2023-12-16 04:09:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4887 to 3195. [2023-12-16 04:09:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 2608 states have (on average 1.3957055214723926) internal successors, (3640), 2619 states have internal predecessors, (3640), 471 states have call successors, (471), 115 states have call predecessors, (471), 115 states have return successors, (471), 460 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-16 04:09:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4582 transitions. [2023-12-16 04:09:40,027 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4582 transitions. Word has length 496 [2023-12-16 04:09:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:09:40,028 INFO L495 AbstractCegarLoop]: Abstraction has 3195 states and 4582 transitions. [2023-12-16 04:09:40,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (74), 2 states have call predecessors, (74), 3 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 04:09:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4582 transitions. [2023-12-16 04:09:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-16 04:09:40,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:09:40,032 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:40,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:40,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:40,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:09:40,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:09:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -576467969, now seen corresponding path program 1 times [2023-12-16 04:09:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:09:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806586962] [2023-12-16 04:09:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:09:40,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:09:40,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346018674] [2023-12-16 04:09:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:09:40,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:09:40,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:09:40,289 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:09:40,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 04:09:41,571 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 [2023-12-16 04:09:41,574 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:09:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 04:09:42,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 04:09:42,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 04:09:42,590 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:09:42,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-16 04:09:42,640 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 [2023-12-16 04:09:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-16 04:09:42,791 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 497 with TraceHistMax 74,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-16 04:09:42,794 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:09:42,796 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:09:42,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:09:42 BoogieIcfgContainer [2023-12-16 04:09:42,797 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:09:42,798 INFO L158 Benchmark]: Toolchain (without parser) took 68653.07ms. Allocated memory was 304.1MB in the beginning and 1.0GB in the end (delta: 727.7MB). Free memory was 246.0MB in the beginning and 702.0MB in the end (delta: -456.0MB). Peak memory consumption was 272.8MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory was 164.3MB in the beginning and 164.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.81ms. Allocated memory is still 304.1MB. Free memory was 246.0MB in the beginning and 208.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.80ms. Allocated memory is still 304.1MB. Free memory was 208.3MB in the beginning and 188.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: Boogie Preprocessor took 195.01ms. Allocated memory is still 304.1MB. Free memory was 188.4MB in the beginning and 230.5MB in the end (delta: -42.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: RCFGBuilder took 1393.96ms. Allocated memory is still 304.1MB. Free memory was 230.5MB in the beginning and 243.9MB in the end (delta: -13.4MB). Peak memory consumption was 106.4MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,798 INFO L158 Benchmark]: TraceAbstraction took 66439.23ms. Allocated memory was 304.1MB in the beginning and 1.0GB in the end (delta: 727.7MB). Free memory was 242.8MB in the beginning and 702.0MB in the end (delta: -459.1MB). Peak memory consumption was 268.6MB. Max. memory is 8.0GB. [2023-12-16 04:09:42,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory was 164.3MB in the beginning and 164.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.81ms. Allocated memory is still 304.1MB. Free memory was 246.0MB in the beginning and 208.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 132.80ms. Allocated memory is still 304.1MB. Free memory was 208.3MB in the beginning and 188.4MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 195.01ms. Allocated memory is still 304.1MB. Free memory was 188.4MB in the beginning and 230.5MB in the end (delta: -42.1MB). Peak memory consumption was 34.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1393.96ms. Allocated memory is still 304.1MB. Free memory was 230.5MB in the beginning and 243.9MB in the end (delta: -13.4MB). Peak memory consumption was 106.4MB. Max. memory is 8.0GB. * TraceAbstraction took 66439.23ms. Allocated memory was 304.1MB in the beginning and 1.0GB in the end (delta: 727.7MB). Free memory was 242.8MB in the beginning and 702.0MB in the end (delta: -459.1MB). Peak memory consumption was 268.6MB. 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 497 with TraceHistMax 74,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 262 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.4s, OverallIterations: 25, TraceHistogramMax: 74, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17721 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17338 mSDsluCounter, 31012 SdHoareTripleChecker+Invalid, 15.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20948 mSDsCounter, 3338 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14301 IncrementalHoareTripleChecker+Invalid, 17639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3338 mSolverCounterUnsat, 10064 mSDtfsCounter, 14301 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18684 GetRequests, 18400 SyntacticMatches, 8 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5053occurred in iteration=19, InterpolantAutomatonStates: 254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 9431 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 12286 NumberOfCodeBlocks, 12286 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 18156 ConstructedInterpolants, 8 QuantifiedInterpolants, 58344 SizeOfPredicates, 77 NumberOfNonLiveVariables, 28844 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 395740/399748 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