/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:52:46,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:52:47,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:52:47,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:52:47,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:52:47,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:52:47,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:52:47,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:52:47,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:52:47,074 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:52:47,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:52:47,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:52:47,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:52:47,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:52:47,076 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:52:47,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:52:47,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:52:47,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:52:47,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:52:47,078 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:52:47,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:52:47,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:52:47,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:52:47,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:52:47,079 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:52:47,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:52:47,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:52:47,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:52:47,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:52:47,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:52:47,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:52:47,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:52:47,082 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:52:47,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:52:47,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:52:47,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:52:47,286 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:52:47,287 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:52:47,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2023-12-19 12:52:48,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:52:48,529 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:52:48,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2023-12-19 12:52:48,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06561074/a962c2446941492580c59b7be59b4467/FLAGc54cae58c [2023-12-19 12:52:48,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06561074/a962c2446941492580c59b7be59b4467 [2023-12-19 12:52:48,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:52:48,565 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:52:48,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:52:48,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:52:48,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:52:48,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:48,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19586920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48, skipping insertion in model container [2023-12-19 12:52:48,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:48,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:52:48,745 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2023-12-19 12:52:48,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:52:48,870 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:52:48,880 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2023-12-19 12:52:48,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:52:48,959 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:52:48,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48 WrapperNode [2023-12-19 12:52:48,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:52:48,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:52:48,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:52:48,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:52:48,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:48,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,062 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 541 [2023-12-19 12:52:49,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:52:49,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:52:49,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:52:49,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:52:49,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,154 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]. [2023-12-19 12:52:49,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:52:49,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:52:49,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:52:49,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:52:49,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (1/1) ... [2023-12-19 12:52:49,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:52:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:49,242 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) [2023-12-19 12:52:49,272 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 [2023-12-19 12:52:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:52:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:52:49,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:52:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:52:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:52:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:52:49,396 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:52:49,397 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:52:49,982 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:52:50,030 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:52:50,030 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:52:50,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:52:50 BoogieIcfgContainer [2023-12-19 12:52:50,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:52:50,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:52:50,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:52:50,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:52:50,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:52:48" (1/3) ... [2023-12-19 12:52:50,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f710dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:52:50, skipping insertion in model container [2023-12-19 12:52:50,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:52:48" (2/3) ... [2023-12-19 12:52:50,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f710dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:52:50, skipping insertion in model container [2023-12-19 12:52:50,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:52:50" (3/3) ... [2023-12-19 12:52:50,036 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i [2023-12-19 12:52:50,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:52:50,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:52:50,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:52:50,094 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;@72332c68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:52:50,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:52:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 142 states have (on average 1.528169014084507) internal successors, (217), 143 states have internal predecessors, (217), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-19 12:52:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-19 12:52:50,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:50,121 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:50,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:50,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash 860894165, now seen corresponding path program 1 times [2023-12-19 12:52:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:50,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224850155] [2023-12-19 12:52:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224850155] [2023-12-19 12:52:50,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:52:50,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714749372] [2023-12-19 12:52:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:50,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:50,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:50,501 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) [2023-12-19 12:52:50,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:52:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:50,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:52:50,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2023-12-19 12:52:50,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714749372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:52:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434565590] [2023-12-19 12:52:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:52:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:52:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:52:50,871 INFO L87 Difference]: Start difference. First operand has 208 states, 142 states have (on average 1.528169014084507) internal successors, (217), 143 states have internal predecessors, (217), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-19 12:52:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:50,936 INFO L93 Difference]: Finished difference Result 413 states and 747 transitions. [2023-12-19 12:52:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:52:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) Word has length 407 [2023-12-19 12:52:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:50,948 INFO L225 Difference]: With dead ends: 413 [2023-12-19 12:52:50,948 INFO L226 Difference]: Without dead ends: 206 [2023-12-19 12:52:50,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:52:50,957 INFO L413 NwaCegarLoop]: 334 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, 334 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 [2023-12-19 12:52:50,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 334 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:52:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-19 12:52:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-19 12:52:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 141 states have (on average 1.49645390070922) internal successors, (211), 141 states have internal predecessors, (211), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-19 12:52:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 337 transitions. [2023-12-19 12:52:51,011 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 337 transitions. Word has length 407 [2023-12-19 12:52:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:51,012 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 337 transitions. [2023-12-19 12:52:51,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-19 12:52:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 337 transitions. [2023-12-19 12:52:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-19 12:52:51,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:51,019 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:51,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:51,226 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 [2023-12-19 12:52:51,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:51,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash 660715339, now seen corresponding path program 1 times [2023-12-19 12:52:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:51,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360773563] [2023-12-19 12:52:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:51,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:51,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111755516] [2023-12-19 12:52:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:51,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:51,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:51,331 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) [2023-12-19 12:52:51,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:52:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:51,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:52:51,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-19 12:52:51,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:51,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360773563] [2023-12-19 12:52:51,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111755516] [2023-12-19 12:52:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111755516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:51,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:51,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:52:51,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219862078] [2023-12-19 12:52:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:52:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:52:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:52:51,976 INFO L87 Difference]: Start difference. First operand 206 states and 337 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:52,032 INFO L93 Difference]: Finished difference Result 616 states and 1009 transitions. [2023-12-19 12:52:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:52:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 407 [2023-12-19 12:52:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:52,035 INFO L225 Difference]: With dead ends: 616 [2023-12-19 12:52:52,035 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 12:52:52,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:52:52,037 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 145 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:52,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 765 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:52:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 12:52:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2023-12-19 12:52:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 280 states have (on average 1.4857142857142858) internal successors, (416), 280 states have internal predecessors, (416), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-19 12:52:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 668 transitions. [2023-12-19 12:52:52,087 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 668 transitions. Word has length 407 [2023-12-19 12:52:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:52,090 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 668 transitions. [2023-12-19 12:52:52,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 668 transitions. [2023-12-19 12:52:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-19 12:52:52,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:52,095 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:52,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:52,301 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 [2023-12-19 12:52:52,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:52,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1584864115, now seen corresponding path program 1 times [2023-12-19 12:52:52,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587831168] [2023-12-19 12:52:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:52,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672263487] [2023-12-19 12:52:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:52,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:52,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:52,362 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) [2023-12-19 12:52:52,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:52:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:52,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 12:52:52,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-19 12:52:52,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587831168] [2023-12-19 12:52:52,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672263487] [2023-12-19 12:52:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672263487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:52,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:52,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:52:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676561595] [2023-12-19 12:52:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:52,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:52:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:52:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:52,973 INFO L87 Difference]: Start difference. First operand 409 states and 668 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:53,203 INFO L93 Difference]: Finished difference Result 1417 states and 2306 transitions. [2023-12-19 12:52:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 12:52:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 407 [2023-12-19 12:52:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:53,208 INFO L225 Difference]: With dead ends: 1417 [2023-12-19 12:52:53,208 INFO L226 Difference]: Without dead ends: 1009 [2023-12-19 12:52:53,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:52:53,210 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 403 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:53,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1102 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:52:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-19 12:52:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 975. [2023-12-19 12:52:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 718 states have (on average 1.5153203342618384) internal successors, (1088), 718 states have internal predecessors, (1088), 252 states have call successors, (252), 4 states have call predecessors, (252), 4 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-19 12:52:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1592 transitions. [2023-12-19 12:52:53,274 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1592 transitions. Word has length 407 [2023-12-19 12:52:53,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:53,275 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1592 transitions. [2023-12-19 12:52:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1592 transitions. [2023-12-19 12:52:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 12:52:53,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:53,279 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:53,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:53,486 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 [2023-12-19 12:52:53,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:53,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash 807966347, now seen corresponding path program 1 times [2023-12-19 12:52:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491245557] [2023-12-19 12:52:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:53,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877179651] [2023-12-19 12:52:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:53,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:53,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:53,524 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) [2023-12-19 12:52:53,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:52:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:53,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 12:52:53,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-19 12:52:54,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:54,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:54,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491245557] [2023-12-19 12:52:54,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:54,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877179651] [2023-12-19 12:52:54,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877179651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:54,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:54,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:52:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653884821] [2023-12-19 12:52:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:54,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:52:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:52:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:54,155 INFO L87 Difference]: Start difference. First operand 975 states and 1592 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:54,365 INFO L93 Difference]: Finished difference Result 2521 states and 4114 transitions. [2023-12-19 12:52:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:52:54,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 408 [2023-12-19 12:52:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:54,371 INFO L225 Difference]: With dead ends: 2521 [2023-12-19 12:52:54,371 INFO L226 Difference]: Without dead ends: 1547 [2023-12-19 12:52:54,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:52:54,374 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 252 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:54,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 973 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:52:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-12-19 12:52:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1525. [2023-12-19 12:52:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1204 states have (on average 1.5465116279069768) internal successors, (1862), 1204 states have internal predecessors, (1862), 315 states have call successors, (315), 5 states have call predecessors, (315), 5 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2023-12-19 12:52:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2492 transitions. [2023-12-19 12:52:54,574 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2492 transitions. Word has length 408 [2023-12-19 12:52:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:54,575 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2492 transitions. [2023-12-19 12:52:54,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2492 transitions. [2023-12-19 12:52:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 12:52:54,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:54,578 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:54,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:54,786 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 [2023-12-19 12:52:54,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:54,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash 948514957, now seen corresponding path program 1 times [2023-12-19 12:52:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:54,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646914229] [2023-12-19 12:52:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:54,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:54,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178958242] [2023-12-19 12:52:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:54,888 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) [2023-12-19 12:52:54,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:52:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:55,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 12:52:55,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-19 12:52:56,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646914229] [2023-12-19 12:52:56,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178958242] [2023-12-19 12:52:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178958242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:52:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103189395] [2023-12-19 12:52:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:56,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:52:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:52:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:56,089 INFO L87 Difference]: Start difference. First operand 1525 states and 2492 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:56,161 INFO L93 Difference]: Finished difference Result 4358 states and 7127 transitions. [2023-12-19 12:52:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:52:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 408 [2023-12-19 12:52:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:56,174 INFO L225 Difference]: With dead ends: 4358 [2023-12-19 12:52:56,174 INFO L226 Difference]: Without dead ends: 2940 [2023-12-19 12:52:56,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:56,179 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 334 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:56,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 658 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:52:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-19 12:52:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2023-12-19 12:52:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2361 states have (on average 1.553155442609064) internal successors, (3667), 2361 states have internal predecessors, (3667), 567 states have call successors, (567), 9 states have call predecessors, (567), 9 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2023-12-19 12:52:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4801 transitions. [2023-12-19 12:52:56,328 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4801 transitions. Word has length 408 [2023-12-19 12:52:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:56,329 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4801 transitions. [2023-12-19 12:52:56,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-19 12:52:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4801 transitions. [2023-12-19 12:52:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 12:52:56,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:56,333 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:56,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:56,540 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 [2023-12-19 12:52:56,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:56,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:56,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1824533963, now seen corresponding path program 1 times [2023-12-19 12:52:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:56,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697155343] [2023-12-19 12:52:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:56,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:56,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888347769] [2023-12-19 12:52:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:56,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:56,603 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) [2023-12-19 12:52:56,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:52:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:56,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:52:56,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 1988 proven. 159 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked. [2023-12-19 12:52:57,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2023-12-19 12:52:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697155343] [2023-12-19 12:52:57,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888347769] [2023-12-19 12:52:57,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888347769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:57,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:57,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 12:52:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134434689] [2023-12-19 12:52:57,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 12:52:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 12:52:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:52:57,486 INFO L87 Difference]: Start difference. First operand 2938 states and 4801 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-12-19 12:52:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:57,890 INFO L93 Difference]: Finished difference Result 5820 states and 9457 transitions. [2023-12-19 12:52:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:52:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 408 [2023-12-19 12:52:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:57,900 INFO L225 Difference]: With dead ends: 5820 [2023-12-19 12:52:57,900 INFO L226 Difference]: Without dead ends: 3010 [2023-12-19 12:52:57,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 808 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:52:57,906 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 341 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:57,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 658 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 12:52:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2023-12-19 12:52:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2974. [2023-12-19 12:52:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2388 states have (on average 1.536850921273032) internal successors, (3670), 2388 states have internal predecessors, (3670), 567 states have call successors, (567), 18 states have call predecessors, (567), 18 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2023-12-19 12:52:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4804 transitions. [2023-12-19 12:52:58,104 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4804 transitions. Word has length 408 [2023-12-19 12:52:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:58,106 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4804 transitions. [2023-12-19 12:52:58,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-12-19 12:52:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4804 transitions. [2023-12-19 12:52:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 12:52:58,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:58,110 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:58,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:58,317 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 [2023-12-19 12:52:58,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:58,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -224853879, now seen corresponding path program 1 times [2023-12-19 12:52:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444822720] [2023-12-19 12:52:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:58,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:58,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612955942] [2023-12-19 12:52:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:58,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:58,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:58,363 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) [2023-12-19 12:52:58,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 12:52:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:58,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 12:52:58,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2023-12-19 12:52:59,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 198 proven. 171 refuted. 0 times theorem prover too weak. 7443 trivial. 0 not checked. [2023-12-19 12:52:59,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:59,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444822720] [2023-12-19 12:52:59,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:59,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612955942] [2023-12-19 12:52:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612955942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:59,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 12:52:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346721824] [2023-12-19 12:52:59,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 12:52:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 12:52:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:52:59,587 INFO L87 Difference]: Start difference. First operand 2974 states and 4804 transitions. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 5 states have call successors, (98), 3 states have call predecessors, (98), 7 states have return successors, (99), 5 states have call predecessors, (99), 5 states have call successors, (99) [2023-12-19 12:53:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:53:00,135 INFO L93 Difference]: Finished difference Result 5928 states and 9475 transitions. [2023-12-19 12:53:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 12:53:00,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 5 states have call successors, (98), 3 states have call predecessors, (98), 7 states have return successors, (99), 5 states have call predecessors, (99), 5 states have call successors, (99) Word has length 408 [2023-12-19 12:53:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:53:00,145 INFO L225 Difference]: With dead ends: 5928 [2023-12-19 12:53:00,146 INFO L226 Difference]: Without dead ends: 3118 [2023-12-19 12:53:00,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-12-19 12:53:00,151 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 704 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 12:53:00,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 771 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 12:53:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2023-12-19 12:53:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3046. [2023-12-19 12:53:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 2442 states have (on average 1.52006552006552) internal successors, (3712), 2442 states have internal predecessors, (3712), 567 states have call successors, (567), 36 states have call predecessors, (567), 36 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2023-12-19 12:53:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4846 transitions. [2023-12-19 12:53:00,285 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4846 transitions. Word has length 408 [2023-12-19 12:53:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:53:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4846 transitions. [2023-12-19 12:53:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 5 states have call successors, (98), 3 states have call predecessors, (98), 7 states have return successors, (99), 5 states have call predecessors, (99), 5 states have call successors, (99) [2023-12-19 12:53:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4846 transitions. [2023-12-19 12:53:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 12:53:00,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:53:00,289 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:53:00,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 12:53:00,494 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 [2023-12-19 12:53:00,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:53:00,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:53:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash 434677643, now seen corresponding path program 1 times [2023-12-19 12:53:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:53:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691064661] [2023-12-19 12:53:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:53:00,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:53:00,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517051847] [2023-12-19 12:53:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:00,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:53:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:53:00,526 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) [2023-12-19 12:53:00,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 12:53:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:53:00,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 12:53:00,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:53:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4908 proven. 33 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2023-12-19 12:53:01,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:53:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2023-12-19 12:53:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:53:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691064661] [2023-12-19 12:53:01,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:53:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517051847] [2023-12-19 12:53:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517051847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:53:01,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:53:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 12:53:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132029481] [2023-12-19 12:53:01,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:53:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 12:53:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:53:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 12:53:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 12:53:01,392 INFO L87 Difference]: Start difference. First operand 3046 states and 4846 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 5 states have call successors, (106), 3 states have call predecessors, (106), 5 states have return successors, (106), 5 states have call predecessors, (106), 5 states have call successors, (106) [2023-12-19 12:53:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:53:01,701 INFO L93 Difference]: Finished difference Result 3098 states and 4892 transitions. [2023-12-19 12:53:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:53:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 5 states have call successors, (106), 3 states have call predecessors, (106), 5 states have return successors, (106), 5 states have call predecessors, (106), 5 states have call successors, (106) Word has length 408 [2023-12-19 12:53:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:53:01,706 INFO L225 Difference]: With dead ends: 3098 [2023-12-19 12:53:01,707 INFO L226 Difference]: Without dead ends: 1642 [2023-12-19 12:53:01,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:53:01,710 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 576 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:53:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 609 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:53:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2023-12-19 12:53:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1612. [2023-12-19 12:53:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1271 states have (on average 1.4830841856805665) internal successors, (1885), 1271 states have internal predecessors, (1885), 315 states have call successors, (315), 25 states have call predecessors, (315), 25 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2023-12-19 12:53:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2515 transitions. [2023-12-19 12:53:01,778 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2515 transitions. Word has length 408 [2023-12-19 12:53:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:53:01,778 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2515 transitions. [2023-12-19 12:53:01,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 5 states have call successors, (106), 3 states have call predecessors, (106), 5 states have return successors, (106), 5 states have call predecessors, (106), 5 states have call successors, (106) [2023-12-19 12:53:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2515 transitions. [2023-12-19 12:53:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-19 12:53:01,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:53:01,780 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:53:01,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 12:53:01,987 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 [2023-12-19 12:53:01,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:53:01,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:53:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2122162582, now seen corresponding path program 1 times [2023-12-19 12:53:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:53:01,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135575677] [2023-12-19 12:53:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:01,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:53:02,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:53:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782859239] [2023-12-19 12:53:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:53:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:53:02,064 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) [2023-12-19 12:53:02,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 12:53:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:53:02,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 12:53:02,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:53:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4570 proven. 111 refuted. 0 times theorem prover too weak. 3131 trivial. 0 not checked. [2023-12-19 12:53:03,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:53:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:53:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135575677] [2023-12-19 12:53:09,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:53:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782859239] [2023-12-19 12:53:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782859239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:53:09,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:53:09,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-19 12:53:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696666277] [2023-12-19 12:53:09,488 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:53:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 12:53:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:53:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 12:53:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-19 12:53:09,489 INFO L87 Difference]: Start difference. First operand 1612 states and 2515 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 12 states have internal predecessors, (112), 4 states have call successors, (63), 4 states have call predecessors, (63), 6 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2023-12-19 12:53:15,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:53:19,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:53:23,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:53:27,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:53:32,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:53:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:53:44,292 INFO L93 Difference]: Finished difference Result 4212 states and 6485 transitions. [2023-12-19 12:53:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 12:53:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 12 states have internal predecessors, (112), 4 states have call successors, (63), 4 states have call predecessors, (63), 6 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) Word has length 409 [2023-12-19 12:53:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:53:44,306 INFO L225 Difference]: With dead ends: 4212 [2023-12-19 12:53:44,307 INFO L226 Difference]: Without dead ends: 2808 [2023-12-19 12:53:44,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2023-12-19 12:53:44,311 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 709 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 156 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:53:44,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1301 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1170 Invalid, 5 Unknown, 0 Unchecked, 33.1s Time] [2023-12-19 12:53:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2023-12-19 12:53:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2674. [2023-12-19 12:53:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2197 states have (on average 1.493400091033227) internal successors, (3281), 2201 states have internal predecessors, (3281), 423 states have call successors, (423), 53 states have call predecessors, (423), 53 states have return successors, (423), 419 states have call predecessors, (423), 423 states have call successors, (423) [2023-12-19 12:53:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4127 transitions. [2023-12-19 12:53:44,491 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4127 transitions. Word has length 409 [2023-12-19 12:53:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:53:44,491 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4127 transitions. [2023-12-19 12:53:44,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 12 states have internal predecessors, (112), 4 states have call successors, (63), 4 states have call predecessors, (63), 6 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2023-12-19 12:53:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4127 transitions. [2023-12-19 12:53:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-19 12:53:44,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:53:44,495 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:53:44,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 12:53:44,696 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 [2023-12-19 12:53:44,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:53:44,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:53:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2127801493, now seen corresponding path program 1 times [2023-12-19 12:53:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:53:44,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660495669] [2023-12-19 12:53:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:53:44,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:53:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809836312] [2023-12-19 12:53:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:53:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:53:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:53:44,732 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) [2023-12-19 12:53:44,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 12:53:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:53:46,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 12:53:46,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:55:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4258 proven. 303 refuted. 0 times theorem prover too weak. 3251 trivial. 0 not checked. [2023-12-19 12:55:36,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:56:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:56:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660495669] [2023-12-19 12:56:20,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:56:20,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809836312] [2023-12-19 12:56:20,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809836312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:56:20,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:56:20,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-19 12:56:20,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025720211] [2023-12-19 12:56:20,945 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:56:20,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 12:56:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:56:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 12:56:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=895, Unknown=17, NotChecked=0, Total=1056 [2023-12-19 12:56:20,948 INFO L87 Difference]: Start difference. First operand 2674 states and 4127 transitions. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 22 states have internal predecessors, (119), 5 states have call successors, (63), 5 states have call predecessors, (63), 8 states have return successors, (63), 5 states have call predecessors, (63), 5 states have call successors, (63) [2023-12-19 12:56:26,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:56:31,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:56:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:56:45,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:04,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:08,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:25,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 12:57:29,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:34,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:38,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:42,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:47,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:52,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:57:56,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 12:58:00,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:04,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:09,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:14,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:18,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:22,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:26,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:30,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:35,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:37,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 12:58:39,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:43,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:45,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:50,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:54,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:58:59,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 12:59:07,626 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-19 12:59:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 12:59:07,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 122.4s TimeCoverageRelationStatistics Valid=447, Invalid=2292, Unknown=17, NotChecked=0, Total=2756 [2023-12-19 12:59:07,627 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 305 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 279 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:59:07,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1053 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1840 Invalid, 25 Unknown, 0 Unchecked, 133.5s Time] [2023-12-19 12:59:07,631 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 101 [2023-12-19 12:59:07,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 12:59:07,828 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 [2023-12-19 12:59:07,829 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-12-19 12:59:07,832 INFO L158 Benchmark]: Toolchain (without parser) took 379267.29ms. Allocated memory was 245.4MB in the beginning and 576.7MB in the end (delta: 331.4MB). Free memory was 201.2MB in the beginning and 186.8MB in the end (delta: 14.4MB). Peak memory consumption was 347.1MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,832 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:59:07,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.84ms. Allocated memory is still 245.4MB. Free memory was 200.8MB in the beginning and 174.5MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.85ms. Allocated memory is still 245.4MB. Free memory was 174.5MB in the beginning and 159.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,833 INFO L158 Benchmark]: Boogie Preprocessor took 158.81ms. Allocated memory is still 245.4MB. Free memory was 158.8MB in the beginning and 199.9MB in the end (delta: -41.1MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,833 INFO L158 Benchmark]: RCFGBuilder took 808.30ms. Allocated memory is still 245.4MB. Free memory was 199.3MB in the beginning and 122.3MB in the end (delta: 77.1MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,833 INFO L158 Benchmark]: TraceAbstraction took 377799.22ms. Allocated memory was 245.4MB in the beginning and 576.7MB in the end (delta: 331.4MB). Free memory was 121.7MB in the beginning and 186.8MB in the end (delta: -65.0MB). Peak memory consumption was 266.2MB. Max. memory is 8.0GB. [2023-12-19 12:59:07,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 394.84ms. Allocated memory is still 245.4MB. Free memory was 200.8MB in the beginning and 174.5MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 101.85ms. Allocated memory is still 245.4MB. Free memory was 174.5MB in the beginning and 159.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 158.81ms. Allocated memory is still 245.4MB. Free memory was 158.8MB in the beginning and 199.9MB in the end (delta: -41.1MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. * RCFGBuilder took 808.30ms. Allocated memory is still 245.4MB. Free memory was 199.3MB in the beginning and 122.3MB in the end (delta: 77.1MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. * TraceAbstraction took 377799.22ms. Allocated memory was 245.4MB in the beginning and 576.7MB in the end (delta: 331.4MB). Free memory was 121.7MB in the beginning and 186.8MB in the end (delta: -65.0MB). Peak memory consumption was 266.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...