/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 [2023-12-15 21:09:52,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:09:52,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:09:52,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:09:52,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:09:52,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:09:52,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:09:52,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:09:52,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:09:52,173 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:09:52,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:09:52,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:09:52,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:09:52,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:09:52,174 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:09:52,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:09:52,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:09:52,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:09:52,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:09:52,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:09:52,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:09:52,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:09:52,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:09:52,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:09:52,179 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:09:52,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:09:52,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:09:52,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:09:52,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:09:52,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:09:52,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:09:52,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:09:52,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:52,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:09:52,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:09:52,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:09:52,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:09:52,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:09:52,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:09:52,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:09:52,183 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:09:52,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:09:52,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:09:52,186 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:09:52,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:09:52,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:09:52,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:09:52,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:09:52,402 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:09:52,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2023-12-15 21:09:53,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:09:53,667 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:09:53,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2023-12-15 21:09:53,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d8d1d89/6405afc911434cdfa1411a5e2b007130/FLAGb8ed9e138 [2023-12-15 21:09:53,684 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d8d1d89/6405afc911434cdfa1411a5e2b007130 [2023-12-15 21:09:53,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:09:53,687 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:09:53,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:53,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:09:53,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:09:53,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:53" (1/1) ... [2023-12-15 21:09:53,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fedff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:53, skipping insertion in model container [2023-12-15 21:09:53,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:53" (1/1) ... [2023-12-15 21:09:53,737 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:09:53,881 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] [2023-12-15 21:09:54,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:54,034 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:09:54,045 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] [2023-12-15 21:09:54,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:54,104 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:09:54,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54 WrapperNode [2023-12-15 21:09:54,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:54,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:54,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:09:54,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:09:54,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,224 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 541 [2023-12-15 21:09:54,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:54,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:09:54,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:09:54,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:09:54,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:09:54,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:09:54,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:09:54,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:09:54,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:09:54,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (1/1) ... [2023-12-15 21:09:54,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:54,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:54,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:09:54,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:09:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:09:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:09:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:09:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:09:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:09:54,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:09:54,515 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:09:54,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:09:55,154 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:09:55,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:09:55,196 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:09:55,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:55 BoogieIcfgContainer [2023-12-15 21:09:55,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:09:55,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:09:55,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:09:55,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:09:55,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:09:53" (1/3) ... [2023-12-15 21:09:55,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:55, skipping insertion in model container [2023-12-15 21:09:55,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:54" (2/3) ... [2023-12-15 21:09:55,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6055689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:55, skipping insertion in model container [2023-12-15 21:09:55,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:55" (3/3) ... [2023-12-15 21:09:55,202 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i [2023-12-15 21:09:55,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:09:55,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:09:55,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:09:55,260 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;@5eb0a1f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:09:55,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:09:55,266 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) [2023-12-15 21:09:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:09:55,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:55,294 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] [2023-12-15 21:09:55,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:55,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash 860894165, now seen corresponding path program 1 times [2023-12-15 21:09:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235530758] [2023-12-15 21:09:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235530758] [2023-12-15 21:09:55,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:09:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023912984] [2023-12-15 21:09:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:55,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:09:55,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:09:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:55,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:09:55,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2023-12-15 21:09:55,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:55,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023912984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:55,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:55,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:09:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176543359] [2023-12-15 21:09:55,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:55,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:09:55,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:09:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:09:55,986 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) [2023-12-15 21:09:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:56,030 INFO L93 Difference]: Finished difference Result 413 states and 747 transitions. [2023-12-15 21:09:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:09:56,033 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 [2023-12-15 21:09:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:56,038 INFO L225 Difference]: With dead ends: 413 [2023-12-15 21:09:56,039 INFO L226 Difference]: Without dead ends: 206 [2023-12-15 21:09:56,042 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 [2023-12-15 21:09:56,044 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 [2023-12-15 21:09:56,045 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] [2023-12-15 21:09:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-15 21:09:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-15 21:09:56,103 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) [2023-12-15 21:09:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 337 transitions. [2023-12-15 21:09:56,106 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 337 transitions. Word has length 407 [2023-12-15 21:09:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:56,106 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 337 transitions. [2023-12-15 21:09:56,106 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) [2023-12-15 21:09:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 337 transitions. [2023-12-15 21:09:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:09:56,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:56,116 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] [2023-12-15 21:09:56,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:09:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:09:56,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:56,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:56,332 INFO L85 PathProgramCache]: Analyzing trace with hash 660715339, now seen corresponding path program 1 times [2023-12-15 21:09:56,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541683688] [2023-12-15 21:09:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:56,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450933277] [2023-12-15 21:09:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:56,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:56,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:09:56,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:09:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:56,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:09:56,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-15 21:09:57,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:57,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541683688] [2023-12-15 21:09:57,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450933277] [2023-12-15 21:09:57,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450933277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:57,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:57,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:09:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912235276] [2023-12-15 21:09:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:57,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:09:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:09:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:09:57,123 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) [2023-12-15 21:09:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:57,201 INFO L93 Difference]: Finished difference Result 616 states and 1009 transitions. [2023-12-15 21:09:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:09:57,202 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 [2023-12-15 21:09:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:57,205 INFO L225 Difference]: With dead ends: 616 [2023-12-15 21:09:57,205 INFO L226 Difference]: Without dead ends: 411 [2023-12-15 21:09:57,207 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 [2023-12-15 21:09:57,208 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 [2023-12-15 21:09:57,208 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] [2023-12-15 21:09:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-15 21:09:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2023-12-15 21:09:57,250 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) [2023-12-15 21:09:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 668 transitions. [2023-12-15 21:09:57,252 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 668 transitions. Word has length 407 [2023-12-15 21:09:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:57,253 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 668 transitions. [2023-12-15 21:09:57,254 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) [2023-12-15 21:09:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 668 transitions. [2023-12-15 21:09:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:09:57,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:57,258 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] [2023-12-15 21:09:57,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:09:57,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:57,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1584864115, now seen corresponding path program 1 times [2023-12-15 21:09:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499645230] [2023-12-15 21:09:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:57,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:57,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430795976] [2023-12-15 21:09:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:57,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:57,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:57,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:09:57,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:09:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:57,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:09:57,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-15 21:09:58,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499645230] [2023-12-15 21:09:58,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430795976] [2023-12-15 21:09:58,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430795976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:58,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:58,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:09:58,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580767731] [2023-12-15 21:09:58,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:58,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:09:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:58,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:09:58,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:09:58,115 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) [2023-12-15 21:09:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:58,352 INFO L93 Difference]: Finished difference Result 1417 states and 2306 transitions. [2023-12-15 21:09:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:09:58,352 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 [2023-12-15 21:09:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:58,358 INFO L225 Difference]: With dead ends: 1417 [2023-12-15 21:09:58,358 INFO L226 Difference]: Without dead ends: 1009 [2023-12-15 21:09:58,360 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 [2023-12-15 21:09:58,360 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 403 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-15 21:09:58,361 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] [2023-12-15 21:09:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-15 21:09:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 975. [2023-12-15 21:09:58,434 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) [2023-12-15 21:09:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1592 transitions. [2023-12-15 21:09:58,439 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1592 transitions. Word has length 407 [2023-12-15 21:09:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:58,440 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1592 transitions. [2023-12-15 21:09:58,440 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) [2023-12-15 21:09:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1592 transitions. [2023-12-15 21:09:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:09:58,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:58,444 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] [2023-12-15 21:09:58,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:09:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:58,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:58,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 807966347, now seen corresponding path program 1 times [2023-12-15 21:09:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:58,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056870245] [2023-12-15 21:09:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:58,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:58,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437531679] [2023-12-15 21:09:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:58,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:58,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:58,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:09:58,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:09:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:58,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:09:58,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-15 21:09:59,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:59,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056870245] [2023-12-15 21:09:59,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437531679] [2023-12-15 21:09:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437531679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:09:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509284417] [2023-12-15 21:09:59,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:59,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:09:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:09:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:09:59,249 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) [2023-12-15 21:09:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:59,450 INFO L93 Difference]: Finished difference Result 2521 states and 4114 transitions. [2023-12-15 21:09:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:09:59,451 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 [2023-12-15 21:09:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:59,457 INFO L225 Difference]: With dead ends: 2521 [2023-12-15 21:09:59,457 INFO L226 Difference]: Without dead ends: 1547 [2023-12-15 21:09:59,460 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 [2023-12-15 21:09:59,476 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 [2023-12-15 21:09:59,477 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] [2023-12-15 21:09:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-12-15 21:09:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1525. [2023-12-15 21:09:59,602 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) [2023-12-15 21:09:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2492 transitions. [2023-12-15 21:09:59,608 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2492 transitions. Word has length 408 [2023-12-15 21:09:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:59,609 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2492 transitions. [2023-12-15 21:09:59,609 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) [2023-12-15 21:09:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2492 transitions. [2023-12-15 21:09:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:09:59,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:59,611 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] [2023-12-15 21:09:59,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:59,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:59,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:59,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 948514957, now seen corresponding path program 1 times [2023-12-15 21:09:59,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:59,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165332709] [2023-12-15 21:09:59,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:59,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:59,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551746627] [2023-12-15 21:09:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:59,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:59,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:09:59,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:10:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:00,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:10:00,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2023-12-15 21:10:00,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:10:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165332709] [2023-12-15 21:10:00,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551746627] [2023-12-15 21:10:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551746627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:10:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:10:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:10:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853066333] [2023-12-15 21:10:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:10:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:10:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:10:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:10:00,833 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) [2023-12-15 21:10:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:00,908 INFO L93 Difference]: Finished difference Result 4358 states and 7127 transitions. [2023-12-15 21:10:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:10:00,909 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 [2023-12-15 21:10:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:00,919 INFO L225 Difference]: With dead ends: 4358 [2023-12-15 21:10:00,919 INFO L226 Difference]: Without dead ends: 2940 [2023-12-15 21:10:00,923 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 [2023-12-15 21:10:00,924 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 [2023-12-15 21:10:00,925 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] [2023-12-15 21:10:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-15 21:10:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2023-12-15 21:10:01,018 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) [2023-12-15 21:10:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4801 transitions. [2023-12-15 21:10:01,030 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4801 transitions. Word has length 408 [2023-12-15 21:10:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:01,031 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4801 transitions. [2023-12-15 21:10:01,031 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) [2023-12-15 21:10:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4801 transitions. [2023-12-15 21:10:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:10:01,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:01,034 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] [2023-12-15 21:10:01,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:10:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:01,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1824533963, now seen corresponding path program 1 times [2023-12-15 21:10:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948167443] [2023-12-15 21:10:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:01,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:01,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246019654] [2023-12-15 21:10:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:01,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:01,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:01,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:10:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:01,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:10:01,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 1988 proven. 159 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked. [2023-12-15 21:10:01,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2023-12-15 21:10:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948167443] [2023-12-15 21:10:02,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246019654] [2023-12-15 21:10:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246019654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:10:02,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:10:02,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:10:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930490180] [2023-12-15 21:10:02,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:02,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:10:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:02,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:10:02,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:10:02,074 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) [2023-12-15 21:10:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:02,350 INFO L93 Difference]: Finished difference Result 5820 states and 9457 transitions. [2023-12-15 21:10:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:10:02,351 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 [2023-12-15 21:10:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:02,360 INFO L225 Difference]: With dead ends: 5820 [2023-12-15 21:10:02,360 INFO L226 Difference]: Without dead ends: 3010 [2023-12-15 21:10:02,366 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 [2023-12-15 21:10:02,368 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:02,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 658 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:10:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2023-12-15 21:10:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2974. [2023-12-15 21:10:02,474 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) [2023-12-15 21:10:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4804 transitions. [2023-12-15 21:10:02,481 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4804 transitions. Word has length 408 [2023-12-15 21:10:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:02,482 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4804 transitions. [2023-12-15 21:10:02,482 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) [2023-12-15 21:10:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4804 transitions. [2023-12-15 21:10:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:10:02,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:02,484 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] [2023-12-15 21:10:02,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:02,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:02,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:02,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash -224853879, now seen corresponding path program 1 times [2023-12-15 21:10:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407788555] [2023-12-15 21:10:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:02,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:02,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578311748] [2023-12-15 21:10:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:02,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:02,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:10:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:02,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:10:02,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2023-12-15 21:10:03,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 198 proven. 171 refuted. 0 times theorem prover too weak. 7443 trivial. 0 not checked. [2023-12-15 21:10:03,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407788555] [2023-12-15 21:10:03,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578311748] [2023-12-15 21:10:03,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578311748] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:10:03,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:10:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-15 21:10:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161965123] [2023-12-15 21:10:03,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:03,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:10:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:10:03,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:10:03,748 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) [2023-12-15 21:10:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:04,324 INFO L93 Difference]: Finished difference Result 5928 states and 9475 transitions. [2023-12-15 21:10:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 21:10:04,325 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 [2023-12-15 21:10:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:04,336 INFO L225 Difference]: With dead ends: 5928 [2023-12-15 21:10:04,336 INFO L226 Difference]: Without dead ends: 3118 [2023-12-15 21:10:04,342 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 [2023-12-15 21:10:04,343 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 [2023-12-15 21:10:04,343 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] [2023-12-15 21:10:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2023-12-15 21:10:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3046. [2023-12-15 21:10:04,586 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) [2023-12-15 21:10:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4846 transitions. [2023-12-15 21:10:04,593 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4846 transitions. Word has length 408 [2023-12-15 21:10:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:04,594 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4846 transitions. [2023-12-15 21:10:04,594 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) [2023-12-15 21:10:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4846 transitions. [2023-12-15 21:10:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:10:04,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:04,621 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] [2023-12-15 21:10:04,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 21:10:04,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:04,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:04,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 434677643, now seen corresponding path program 1 times [2023-12-15 21:10:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:04,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285858830] [2023-12-15 21:10:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:04,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:04,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940174348] [2023-12-15 21:10:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:04,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:04,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:04,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:10:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:05,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:10:05,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4908 proven. 33 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2023-12-15 21:10:05,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2023-12-15 21:10:05,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285858830] [2023-12-15 21:10:05,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940174348] [2023-12-15 21:10:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940174348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:10:05,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:10:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:10:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538797749] [2023-12-15 21:10:05,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:05,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:10:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:10:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:10:05,753 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) [2023-12-15 21:10:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:06,240 INFO L93 Difference]: Finished difference Result 3098 states and 4892 transitions. [2023-12-15 21:10:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:10:06,242 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 [2023-12-15 21:10:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:06,247 INFO L225 Difference]: With dead ends: 3098 [2023-12-15 21:10:06,248 INFO L226 Difference]: Without dead ends: 1642 [2023-12-15 21:10:06,250 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 [2023-12-15 21:10:06,251 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 576 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:06,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 609 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:10:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2023-12-15 21:10:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1612. [2023-12-15 21:10:06,321 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) [2023-12-15 21:10:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2515 transitions. [2023-12-15 21:10:06,325 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2515 transitions. Word has length 408 [2023-12-15 21:10:06,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:06,326 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2515 transitions. [2023-12-15 21:10:06,326 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) [2023-12-15 21:10:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2515 transitions. [2023-12-15 21:10:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-15 21:10:06,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:06,328 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] [2023-12-15 21:10:06,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:06,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:10:06,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:06,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2122162582, now seen corresponding path program 1 times [2023-12-15 21:10:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907480160] [2023-12-15 21:10:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:06,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608922704] [2023-12-15 21:10:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:06,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:06,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:06,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:10:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:06,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:10:06,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4570 proven. 111 refuted. 0 times theorem prover too weak. 3131 trivial. 0 not checked. [2023-12-15 21:10:08,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:13,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907480160] [2023-12-15 21:10:13,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:13,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608922704] [2023-12-15 21:10:13,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608922704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:10:13,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:10:13,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-15 21:10:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709343948] [2023-12-15 21:10:13,495 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:10:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:10:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:10:13,496 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) [2023-12-15 21:10:19,387 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] [2023-12-15 21:10:24,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 21:10:28,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 21:10:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:37,902 INFO L93 Difference]: Finished difference Result 4212 states and 6485 transitions. [2023-12-15 21:10:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 21:10:37,903 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 [2023-12-15 21:10:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:37,910 INFO L225 Difference]: With dead ends: 4212 [2023-12-15 21:10:37,910 INFO L226 Difference]: Without dead ends: 2808 [2023-12-15 21:10:37,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2023-12-15 21:10:37,913 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 709 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 156 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:37,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1301 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1170 Invalid, 3 Unknown, 0 Unchecked, 23.0s Time] [2023-12-15 21:10:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2023-12-15 21:10:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2674. [2023-12-15 21:10:38,013 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) [2023-12-15 21:10:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4127 transitions. [2023-12-15 21:10:38,019 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4127 transitions. Word has length 409 [2023-12-15 21:10:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:38,019 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4127 transitions. [2023-12-15 21:10:38,020 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) [2023-12-15 21:10:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4127 transitions. [2023-12-15 21:10:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-15 21:10:38,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:38,022 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] [2023-12-15 21:10:38,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:10:38,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:38,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:38,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2127801493, now seen corresponding path program 1 times [2023-12-15 21:10:38,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:38,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187375552] [2023-12-15 21:10:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:38,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:38,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128747379] [2023-12-15 21:10:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:38,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:38,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:10:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:39,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 21:10:39,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 21:11:03,418 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:11:03,426 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:11:04,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 21:11:04,619 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:11:04,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:11:04,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 21:11:04,645 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 411 with TraceHistMax 63,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-15 21:11:04,648 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 137 [2023-12-15 21:11:04,649 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:04,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:11:04,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:11:04 BoogieIcfgContainer [2023-12-15 21:11:04,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:11:04,654 INFO L158 Benchmark]: Toolchain (without parser) took 70966.42ms. Allocated memory was 284.2MB in the beginning and 647.0MB in the end (delta: 362.8MB). Free memory was 230.9MB in the beginning and 250.3MB in the end (delta: -19.4MB). Peak memory consumption was 344.2MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,654 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:11:04,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.29ms. Allocated memory is still 284.2MB. Free memory was 230.7MB in the beginning and 204.4MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.66ms. Allocated memory is still 284.2MB. Free memory was 204.2MB in the beginning and 238.6MB in the end (delta: -34.4MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,660 INFO L158 Benchmark]: Boogie Preprocessor took 128.90ms. Allocated memory is still 284.2MB. Free memory was 238.6MB in the beginning and 209.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,660 INFO L158 Benchmark]: RCFGBuilder took 841.88ms. Allocated memory is still 284.2MB. Free memory was 209.3MB in the beginning and 131.7MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,660 INFO L158 Benchmark]: TraceAbstraction took 69455.04ms. Allocated memory was 284.2MB in the beginning and 647.0MB in the end (delta: 362.8MB). Free memory was 131.1MB in the beginning and 250.3MB in the end (delta: -119.2MB). Peak memory consumption was 243.7MB. Max. memory is 8.0GB. [2023-12-15 21:11:04,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 418.29ms. Allocated memory is still 284.2MB. Free memory was 230.7MB in the beginning and 204.4MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 117.66ms. Allocated memory is still 284.2MB. Free memory was 204.2MB in the beginning and 238.6MB in the end (delta: -34.4MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 128.90ms. Allocated memory is still 284.2MB. Free memory was 238.6MB in the beginning and 209.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * RCFGBuilder took 841.88ms. Allocated memory is still 284.2MB. Free memory was 209.3MB in the beginning and 131.7MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. * TraceAbstraction took 69455.04ms. Allocated memory was 284.2MB in the beginning and 647.0MB in the end (delta: 362.8MB). Free memory was 131.1MB in the beginning and 250.3MB in the end (delta: -119.2MB). Peak memory consumption was 243.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 411 with TraceHistMax 63,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.4s, OverallIterations: 10, TraceHistogramMax: 63, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 3584 SdHoareTripleChecker+Valid, 24.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3464 mSDsluCounter, 7171 SdHoareTripleChecker+Invalid, 24.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4304 mSDsCounter, 811 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2611 IncrementalHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 811 mSolverCounterUnsat, 2867 mSDtfsCounter, 2611 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4972 GetRequests, 4897 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3046occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 332 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 4077 NumberOfCodeBlocks, 4077 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4882 ConstructedInterpolants, 1 QuantifiedInterpolants, 16716 SizeOfPredicates, 24 NumberOfNonLiveVariables, 8401 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 92910/93744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown