/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:47:40,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:47:40,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:47:40,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:47:40,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:47:40,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:47:40,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:47:40,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:47:40,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:47:40,374 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:47:40,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:47:40,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:47:40,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:47:40,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:47:40,375 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:47:40,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:47:40,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:47:40,375 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:47:40,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:47:40,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:47:40,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:47:40,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:47:40,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:47:40,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:47:40,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:47:40,378 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:47:40,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:47:40,378 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:47:40,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:47:40,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:47:40,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:47:40,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:47:40,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:40,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:47:40,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:47:40,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:47:40,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:47:40,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:47:40,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:47:40,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:47:40,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:47:40,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:47:40,586 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:47:40,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-19.i [2023-12-15 19:47:41,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:47:41,759 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:47:41,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-19.i [2023-12-15 19:47:41,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf77b65/0a340076b0294632bdbfbbb0635f3299/FLAG9222ba292 [2023-12-15 19:47:41,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0cf77b65/0a340076b0294632bdbfbbb0635f3299 [2023-12-15 19:47:41,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:47:41,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:47:41,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:41,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:47:41,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:47:41,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:41" (1/1) ... [2023-12-15 19:47:41,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4768d68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:41, skipping insertion in model container [2023-12-15 19:47:41,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:41" (1/1) ... [2023-12-15 19:47:41,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:47:41,919 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-19.i[916,929] [2023-12-15 19:47:42,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:42,048 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:47:42,056 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-19.i[916,929] [2023-12-15 19:47:42,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:42,126 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:47:42,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42 WrapperNode [2023-12-15 19:47:42,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:42,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:42,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:47:42,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:47:42,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,203 INFO L138 Inliner]: procedures = 26, calls = 95, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 590 [2023-12-15 19:47:42,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:42,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:47:42,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:47:42,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:47:42,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,246 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:47:42,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:47:42,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:47:42,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:47:42,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:47:42,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (1/1) ... [2023-12-15 19:47:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:42,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:47:42,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:47:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:47:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:47:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:47:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:47:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:47:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:47:42,434 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:47:42,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:47:43,100 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:47:43,140 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:47:43,140 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:47:43,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:43 BoogieIcfgContainer [2023-12-15 19:47:43,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:47:43,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:47:43,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:47:43,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:47:43,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:47:41" (1/3) ... [2023-12-15 19:47:43,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b0b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:43, skipping insertion in model container [2023-12-15 19:47:43,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:42" (2/3) ... [2023-12-15 19:47:43,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b0b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:43, skipping insertion in model container [2023-12-15 19:47:43,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:43" (3/3) ... [2023-12-15 19:47:43,146 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-19.i [2023-12-15 19:47:43,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:47:43,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:47:43,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:47:43,207 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;@4aaf4686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:47:43,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:47:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:47:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:43,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:43,249 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:43,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:43,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1418585364, now seen corresponding path program 1 times [2023-12-15 19:47:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:43,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360658946] [2023-12-15 19:47:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:43,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:43,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360658946] [2023-12-15 19:47:43,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:47:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949116538] [2023-12-15 19:47:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:43,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:43,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:43,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:47:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:43,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:47:43,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2023-12-15 19:47:43,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949116538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:47:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004039309] [2023-12-15 19:47:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:47:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:47:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:47:43,956 INFO L87 Difference]: Start difference. First operand has 223 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-15 19:47:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:44,010 INFO L93 Difference]: Finished difference Result 442 states and 840 transitions. [2023-12-15 19:47:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:47:44,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) Word has length 516 [2023-12-15 19:47:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:44,026 INFO L225 Difference]: With dead ends: 442 [2023-12-15 19:47:44,026 INFO L226 Difference]: Without dead ends: 220 [2023-12-15 19:47:44,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 515 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 19:47:44,032 INFO L413 NwaCegarLoop]: 369 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, 369 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 19:47:44,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-15 19:47:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-15 19:47:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 136 states have (on average 1.5294117647058822) internal successors, (208), 136 states have internal predecessors, (208), 82 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:47:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 372 transitions. [2023-12-15 19:47:44,109 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 372 transitions. Word has length 516 [2023-12-15 19:47:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 372 transitions. [2023-12-15 19:47:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 2 states have call successors, (82) [2023-12-15 19:47:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 372 transitions. [2023-12-15 19:47:44,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:44,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:44,120 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:44,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:47:44,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:47:44,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:44,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1881901176, now seen corresponding path program 1 times [2023-12-15 19:47:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:44,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439627067] [2023-12-15 19:47:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:44,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:44,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214125682] [2023-12-15 19:47:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:44,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:44,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:47:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:44,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:44,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:44,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439627067] [2023-12-15 19:47:44,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214125682] [2023-12-15 19:47:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214125682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:47:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007253951] [2023-12-15 19:47:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:44,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:44,811 INFO L87 Difference]: Start difference. First operand 220 states and 372 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:45,041 INFO L93 Difference]: Finished difference Result 838 states and 1413 transitions. [2023-12-15 19:47:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:47:45,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 516 [2023-12-15 19:47:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:45,046 INFO L225 Difference]: With dead ends: 838 [2023-12-15 19:47:45,046 INFO L226 Difference]: Without dead ends: 619 [2023-12-15 19:47:45,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:45,048 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 664 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:45,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1571 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:47:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-12-15 19:47:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 610. [2023-12-15 19:47:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 398 states have (on average 1.5301507537688441) internal successors, (609), 401 states have internal predecessors, (609), 207 states have call successors, (207), 4 states have call predecessors, (207), 4 states have return successors, (207), 204 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 19:47:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1023 transitions. [2023-12-15 19:47:45,102 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1023 transitions. Word has length 516 [2023-12-15 19:47:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:45,103 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 1023 transitions. [2023-12-15 19:47:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1023 transitions. [2023-12-15 19:47:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:45,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:45,109 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:45,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:45,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:47:45,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:45,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:45,319 INFO L85 PathProgramCache]: Analyzing trace with hash 924259638, now seen corresponding path program 1 times [2023-12-15 19:47:45,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:45,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321193766] [2023-12-15 19:47:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:45,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:45,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:45,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909365663] [2023-12-15 19:47:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:45,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:45,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:47:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:45,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:45,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:45,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321193766] [2023-12-15 19:47:45,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909365663] [2023-12-15 19:47:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909365663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:45,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593996460] [2023-12-15 19:47:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:45,747 INFO L87 Difference]: Start difference. First operand 610 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:45,822 INFO L93 Difference]: Finished difference Result 1814 states and 3041 transitions. [2023-12-15 19:47:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 516 [2023-12-15 19:47:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:45,830 INFO L225 Difference]: With dead ends: 1814 [2023-12-15 19:47:45,830 INFO L226 Difference]: Without dead ends: 1205 [2023-12-15 19:47:45,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:45,834 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 338 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:45,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 791 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-12-15 19:47:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 717. [2023-12-15 19:47:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 505 states have (on average 1.598019801980198) internal successors, (807), 508 states have internal predecessors, (807), 207 states have call successors, (207), 4 states have call predecessors, (207), 4 states have return successors, (207), 204 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 19:47:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1221 transitions. [2023-12-15 19:47:45,903 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1221 transitions. Word has length 516 [2023-12-15 19:47:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1221 transitions. [2023-12-15 19:47:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1221 transitions. [2023-12-15 19:47:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:45,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:45,907 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:45,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:46,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:46,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1104326472, now seen corresponding path program 1 times [2023-12-15 19:47:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:46,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963337255] [2023-12-15 19:47:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:46,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:46,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565974200] [2023-12-15 19:47:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:46,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:46,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:46,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:47:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:46,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:46,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:46,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:46,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963337255] [2023-12-15 19:47:46,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:46,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565974200] [2023-12-15 19:47:46,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565974200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:46,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:46,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423093724] [2023-12-15 19:47:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:46,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:46,894 INFO L87 Difference]: Start difference. First operand 717 states and 1221 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:47,137 INFO L93 Difference]: Finished difference Result 2149 states and 3661 transitions. [2023-12-15 19:47:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:47:47,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 516 [2023-12-15 19:47:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:47,145 INFO L225 Difference]: With dead ends: 2149 [2023-12-15 19:47:47,146 INFO L226 Difference]: Without dead ends: 1433 [2023-12-15 19:47:47,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 513 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 19:47:47,150 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 516 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:47,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 674 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:47:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-12-15 19:47:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 738. [2023-12-15 19:47:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 526 states have (on average 1.6045627376425855) internal successors, (844), 529 states have internal predecessors, (844), 207 states have call successors, (207), 4 states have call predecessors, (207), 4 states have return successors, (207), 204 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-15 19:47:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1258 transitions. [2023-12-15 19:47:47,205 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1258 transitions. Word has length 516 [2023-12-15 19:47:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:47,206 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1258 transitions. [2023-12-15 19:47:47,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1258 transitions. [2023-12-15 19:47:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:47,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:47,209 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:47,218 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 19:47:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:47,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:47,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 282458938, now seen corresponding path program 1 times [2023-12-15 19:47:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:47,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033555160] [2023-12-15 19:47:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:47,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:47,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:47,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065143874] [2023-12-15 19:47:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:47,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:47,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:47:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:47,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:47:47,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:48,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:48,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033555160] [2023-12-15 19:47:48,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:48,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065143874] [2023-12-15 19:47:48,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065143874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:48,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:47:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263574953] [2023-12-15 19:47:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:48,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:47:48,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:48,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:47:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:48,747 INFO L87 Difference]: Start difference. First operand 738 states and 1258 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:49,182 INFO L93 Difference]: Finished difference Result 2999 states and 5106 transitions. [2023-12-15 19:47:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:47:49,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 516 [2023-12-15 19:47:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:49,192 INFO L225 Difference]: With dead ends: 2999 [2023-12-15 19:47:49,192 INFO L226 Difference]: Without dead ends: 2262 [2023-12-15 19:47:49,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:47:49,194 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 680 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:49,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1140 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:47:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-15 19:47:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2208. [2023-12-15 19:47:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1574 states have (on average 1.590851334180432) internal successors, (2504), 1583 states have internal predecessors, (2504), 621 states have call successors, (621), 12 states have call predecessors, (621), 12 states have return successors, (621), 612 states have call predecessors, (621), 621 states have call successors, (621) [2023-12-15 19:47:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3746 transitions. [2023-12-15 19:47:49,391 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3746 transitions. Word has length 516 [2023-12-15 19:47:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:49,392 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 3746 transitions. [2023-12-15 19:47:49,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3746 transitions. [2023-12-15 19:47:49,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:49,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:49,396 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:49,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:49,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 540624376, now seen corresponding path program 1 times [2023-12-15 19:47:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168701905] [2023-12-15 19:47:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:49,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490978618] [2023-12-15 19:47:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:49,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:49,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:49,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:49,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:47:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:49,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:47:49,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 2031 proven. 18 refuted. 0 times theorem prover too weak. 11235 trivial. 0 not checked. [2023-12-15 19:47:49,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 225 proven. 18 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168701905] [2023-12-15 19:47:50,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490978618] [2023-12-15 19:47:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490978618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:50,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:50,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:47:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055724265] [2023-12-15 19:47:50,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:50,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:47:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:47:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:47:50,188 INFO L87 Difference]: Start difference. First operand 2208 states and 3746 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-15 19:47:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:50,839 INFO L93 Difference]: Finished difference Result 4572 states and 7720 transitions. [2023-12-15 19:47:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:47:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 516 [2023-12-15 19:47:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:50,849 INFO L225 Difference]: With dead ends: 4572 [2023-12-15 19:47:50,849 INFO L226 Difference]: Without dead ends: 2365 [2023-12-15 19:47:50,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1024 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:47:50,854 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 236 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:50,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1001 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:47:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-15 19:47:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2338. [2023-12-15 19:47:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1626 states have (on average 1.5645756457564575) internal successors, (2544), 1636 states have internal predecessors, (2544), 696 states have call successors, (696), 15 states have call predecessors, (696), 15 states have return successors, (696), 686 states have call predecessors, (696), 696 states have call successors, (696) [2023-12-15 19:47:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3936 transitions. [2023-12-15 19:47:50,993 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3936 transitions. Word has length 516 [2023-12-15 19:47:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:50,993 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 3936 transitions. [2023-12-15 19:47:50,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-15 19:47:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3936 transitions. [2023-12-15 19:47:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:50,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:50,996 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:51,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:51,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:51,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1047723526, now seen corresponding path program 1 times [2023-12-15 19:47:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:51,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116441664] [2023-12-15 19:47:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:51,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716621537] [2023-12-15 19:47:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:51,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:51,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:51,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:47:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:51,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:47:51,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2023-12-15 19:47:52,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116441664] [2023-12-15 19:47:52,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716621537] [2023-12-15 19:47:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716621537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:52,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:52,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:47:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357408018] [2023-12-15 19:47:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:47:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:47:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:47:52,040 INFO L87 Difference]: Start difference. First operand 2338 states and 3936 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:53,067 INFO L93 Difference]: Finished difference Result 9897 states and 16483 transitions. [2023-12-15 19:47:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:47:53,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) Word has length 516 [2023-12-15 19:47:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:53,098 INFO L225 Difference]: With dead ends: 9897 [2023-12-15 19:47:53,098 INFO L226 Difference]: Without dead ends: 7678 [2023-12-15 19:47:53,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:47:53,107 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 917 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:53,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 2300 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:47:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2023-12-15 19:47:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 4777. [2023-12-15 19:47:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 3355 states have (on average 1.5567809239940387) internal successors, (5223), 3381 states have internal predecessors, (5223), 1389 states have call successors, (1389), 32 states have call predecessors, (1389), 32 states have return successors, (1389), 1363 states have call predecessors, (1389), 1389 states have call successors, (1389) [2023-12-15 19:47:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 8001 transitions. [2023-12-15 19:47:53,614 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 8001 transitions. Word has length 516 [2023-12-15 19:47:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:53,614 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 8001 transitions. [2023-12-15 19:47:53,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (82), 1 states have call predecessors, (82), 1 states have return successors, (82), 1 states have call predecessors, (82), 1 states have call successors, (82) [2023-12-15 19:47:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 8001 transitions. [2023-12-15 19:47:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:53,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:53,618 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:53,631 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 19:47:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:53,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1441805436, now seen corresponding path program 1 times [2023-12-15 19:47:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68319137] [2023-12-15 19:47:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:53,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395086613] [2023-12-15 19:47:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:53,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:53,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:53,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:47:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:54,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:47:54,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 3183 proven. 210 refuted. 0 times theorem prover too weak. 9891 trivial. 0 not checked. [2023-12-15 19:47:54,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 33 proven. 210 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:54,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68319137] [2023-12-15 19:47:54,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395086613] [2023-12-15 19:47:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395086613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:54,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:54,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 19:47:54,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710144188] [2023-12-15 19:47:54,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:54,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:47:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:47:54,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:47:54,942 INFO L87 Difference]: Start difference. First operand 4777 states and 8001 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-15 19:47:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:55,567 INFO L93 Difference]: Finished difference Result 7701 states and 12743 transitions. [2023-12-15 19:47:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:47:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) Word has length 516 [2023-12-15 19:47:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:55,595 INFO L225 Difference]: With dead ends: 7701 [2023-12-15 19:47:55,596 INFO L226 Difference]: Without dead ends: 5009 [2023-12-15 19:47:55,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1023 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:47:55,605 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 440 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:55,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 677 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:47:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2023-12-15 19:47:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 4893. [2023-12-15 19:47:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 3442 states have (on average 1.538059267867519) internal successors, (5294), 3468 states have internal predecessors, (5294), 1389 states have call successors, (1389), 61 states have call predecessors, (1389), 61 states have return successors, (1389), 1363 states have call predecessors, (1389), 1389 states have call successors, (1389) [2023-12-15 19:47:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 8072 transitions. [2023-12-15 19:47:55,937 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 8072 transitions. Word has length 516 [2023-12-15 19:47:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:55,937 INFO L495 AbstractCegarLoop]: Abstraction has 4893 states and 8072 transitions. [2023-12-15 19:47:55,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-15 19:47:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 8072 transitions. [2023-12-15 19:47:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-15 19:47:55,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:55,941 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:55,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:47:56,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1499063738, now seen corresponding path program 1 times [2023-12-15 19:47:56,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:56,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729276500] [2023-12-15 19:47:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:56,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:56,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040613811] [2023-12-15 19:47:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:56,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:56,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:47:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:56,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:47:56,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 8277 proven. 48 refuted. 0 times theorem prover too weak. 4959 trivial. 0 not checked. [2023-12-15 19:47:56,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 195 proven. 48 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:57,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729276500] [2023-12-15 19:47:57,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040613811] [2023-12-15 19:47:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040613811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:57,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 19:47:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708323142] [2023-12-15 19:47:57,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:47:57,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:47:57,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:47:57,227 INFO L87 Difference]: Start difference. First operand 4893 states and 8072 transitions. Second operand has 12 states, 12 states have (on average 14.583333333333334) internal successors, (175), 12 states have internal predecessors, (175), 5 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) [2023-12-15 19:47:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:58,076 INFO L93 Difference]: Finished difference Result 9843 states and 16146 transitions. [2023-12-15 19:47:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:47:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.583333333333334) internal successors, (175), 12 states have internal predecessors, (175), 5 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) Word has length 516 [2023-12-15 19:47:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:58,091 INFO L225 Difference]: With dead ends: 9843 [2023-12-15 19:47:58,091 INFO L226 Difference]: Without dead ends: 5073 [2023-12-15 19:47:58,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:47:58,103 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 858 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:58,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 830 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:47:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2023-12-15 19:47:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4957. [2023-12-15 19:47:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 3497 states have (on average 1.5135830712038891) internal successors, (5293), 3523 states have internal predecessors, (5293), 1389 states have call successors, (1389), 70 states have call predecessors, (1389), 70 states have return successors, (1389), 1363 states have call predecessors, (1389), 1389 states have call successors, (1389) [2023-12-15 19:47:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 8071 transitions. [2023-12-15 19:47:58,463 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 8071 transitions. Word has length 516 [2023-12-15 19:47:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:58,463 INFO L495 AbstractCegarLoop]: Abstraction has 4957 states and 8071 transitions. [2023-12-15 19:47:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.583333333333334) internal successors, (175), 12 states have internal predecessors, (175), 5 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) [2023-12-15 19:47:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 8071 transitions. [2023-12-15 19:47:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-15 19:47:58,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:58,467 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:58,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:58,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:58,675 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:58,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1020829505, now seen corresponding path program 1 times [2023-12-15 19:47:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814214074] [2023-12-15 19:47:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:58,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:58,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:58,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570794404] [2023-12-15 19:47:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:58,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:58,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:58,710 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:47:58,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:47:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:58,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:47:58,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 8860 proven. 249 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2023-12-15 19:47:59,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:47:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 156 proven. 87 refuted. 0 times theorem prover too weak. 13041 trivial. 0 not checked. [2023-12-15 19:47:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814214074] [2023-12-15 19:47:59,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570794404] [2023-12-15 19:47:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570794404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:47:59,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:47:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-12-15 19:47:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356762041] [2023-12-15 19:47:59,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:47:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 19:47:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 19:47:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:47:59,884 INFO L87 Difference]: Start difference. First operand 4957 states and 8071 transitions. Second operand has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 4 states have call successors, (137), 3 states have call predecessors, (137), 6 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-12-15 19:48:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:01,756 INFO L93 Difference]: Finished difference Result 13141 states and 20756 transitions. [2023-12-15 19:48:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-15 19:48:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 4 states have call successors, (137), 3 states have call predecessors, (137), 6 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) Word has length 518 [2023-12-15 19:48:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:01,815 INFO L225 Difference]: With dead ends: 13141 [2023-12-15 19:48:01,816 INFO L226 Difference]: Without dead ends: 8311 [2023-12-15 19:48:01,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1025 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=469, Invalid=1253, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 19:48:01,826 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 993 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:01,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1806 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:48:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2023-12-15 19:48:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 6389. [2023-12-15 19:48:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 4483 states have (on average 1.4657595360249833) internal successors, (6571), 4521 states have internal predecessors, (6571), 1751 states have call successors, (1751), 154 states have call predecessors, (1751), 154 states have return successors, (1751), 1713 states have call predecessors, (1751), 1751 states have call successors, (1751) [2023-12-15 19:48:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 10073 transitions. [2023-12-15 19:48:02,357 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 10073 transitions. Word has length 518 [2023-12-15 19:48:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:02,358 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 10073 transitions. [2023-12-15 19:48:02,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 4 states have call successors, (137), 3 states have call predecessors, (137), 6 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-12-15 19:48:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 10073 transitions. [2023-12-15 19:48:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-15 19:48:02,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:02,363 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:02,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:48:02,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:02,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1060758337, now seen corresponding path program 1 times [2023-12-15 19:48:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81893367] [2023-12-15 19:48:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:02,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848782880] [2023-12-15 19:48:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:02,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:02,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:48:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:02,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 19:48:02,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 8931 proven. 531 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2023-12-15 19:48:05,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 432 proven. 288 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2023-12-15 19:48:07,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81893367] [2023-12-15 19:48:07,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848782880] [2023-12-15 19:48:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848782880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:07,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2023-12-15 19:48:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842011111] [2023-12-15 19:48:07,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:07,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-15 19:48:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-15 19:48:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 19:48:07,714 INFO L87 Difference]: Start difference. First operand 6389 states and 10073 transitions. Second operand has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 35 states have internal predecessors, (241), 10 states have call successors, (164), 7 states have call predecessors, (164), 13 states have return successors, (164), 10 states have call predecessors, (164), 10 states have call successors, (164) [2023-12-15 19:48:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:26,243 INFO L93 Difference]: Finished difference Result 20005 states and 30285 transitions. [2023-12-15 19:48:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-15 19:48:26,243 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 35 states have internal predecessors, (241), 10 states have call successors, (164), 7 states have call predecessors, (164), 13 states have return successors, (164), 10 states have call predecessors, (164), 10 states have call successors, (164) Word has length 518 [2023-12-15 19:48:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:26,275 INFO L225 Difference]: With dead ends: 20005 [2023-12-15 19:48:26,276 INFO L226 Difference]: Without dead ends: 13759 [2023-12-15 19:48:26,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8052 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4153, Invalid=18497, Unknown=0, NotChecked=0, Total=22650 [2023-12-15 19:48:26,293 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1910 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 1873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 5915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1873 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:26,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 2800 Invalid, 5915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1873 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-15 19:48:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13759 states. [2023-12-15 19:48:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13759 to 4757. [2023-12-15 19:48:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 3710 states have (on average 1.5439353099730457) internal successors, (5728), 3724 states have internal predecessors, (5728), 903 states have call successors, (903), 143 states have call predecessors, (903), 143 states have return successors, (903), 889 states have call predecessors, (903), 903 states have call successors, (903) [2023-12-15 19:48:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7534 transitions. [2023-12-15 19:48:26,902 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 7534 transitions. Word has length 518 [2023-12-15 19:48:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:26,903 INFO L495 AbstractCegarLoop]: Abstraction has 4757 states and 7534 transitions. [2023-12-15 19:48:26,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 35 states have internal predecessors, (241), 10 states have call successors, (164), 7 states have call predecessors, (164), 13 states have return successors, (164), 10 states have call predecessors, (164), 10 states have call successors, (164) [2023-12-15 19:48:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 7534 transitions. [2023-12-15 19:48:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-15 19:48:26,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:26,907 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:26,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:48:27,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:27,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1428770625, now seen corresponding path program 1 times [2023-12-15 19:48:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:27,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177702983] [2023-12-15 19:48:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:27,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:27,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444475803] [2023-12-15 19:48:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:27,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:48:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:48:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:27,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-15 19:48:27,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 9094 proven. 603 refuted. 0 times theorem prover too weak. 3587 trivial. 0 not checked. [2023-12-15 19:48:30,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 579 proven. 375 refuted. 0 times theorem prover too weak. 12330 trivial. 0 not checked. [2023-12-15 19:48:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177702983] [2023-12-15 19:48:34,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444475803] [2023-12-15 19:48:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444475803] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:34,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:34,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 41 [2023-12-15 19:48:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509437282] [2023-12-15 19:48:34,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:34,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-15 19:48:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-15 19:48:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 19:48:34,045 INFO L87 Difference]: Start difference. First operand 4757 states and 7534 transitions. Second operand has 41 states, 40 states have (on average 6.275) internal successors, (251), 39 states have internal predecessors, (251), 12 states have call successors, (164), 8 states have call predecessors, (164), 16 states have return successors, (164), 12 states have call predecessors, (164), 12 states have call successors, (164) Received shutdown request... [2023-12-15 19:48:42,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:48:42,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:48:43,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:43,808 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 19:48:43,823 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 19:48:43,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1921, Invalid=5911, Unknown=0, NotChecked=0, Total=7832 [2023-12-15 19:48:43,825 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2234 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 1374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 4361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1374 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:43,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 2400 Invalid, 4361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1374 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 19:48:43,826 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:48:43,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:48:43,826 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-15 19:48:43,830 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:43,832 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:48:43,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:48:43 BoogieIcfgContainer [2023-12-15 19:48:43,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:48:43,833 INFO L158 Benchmark]: Toolchain (without parser) took 62048.61ms. Allocated memory was 295.7MB in the beginning and 983.6MB in the end (delta: 687.9MB). Free memory was 239.0MB in the beginning and 501.5MB in the end (delta: -262.5MB). Peak memory consumption was 426.4MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,833 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 213.9MB. Free memory is still 159.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:48:43,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.29ms. Allocated memory is still 295.7MB. Free memory was 239.0MB in the beginning and 212.8MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.77ms. Allocated memory is still 295.7MB. Free memory was 212.8MB in the beginning and 200.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,834 INFO L158 Benchmark]: Boogie Preprocessor took 86.33ms. Allocated memory is still 295.7MB. Free memory was 200.2MB in the beginning and 180.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,834 INFO L158 Benchmark]: RCFGBuilder took 849.85ms. Allocated memory is still 295.7MB. Free memory was 180.3MB in the beginning and 221.9MB in the end (delta: -41.6MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,834 INFO L158 Benchmark]: TraceAbstraction took 60691.13ms. Allocated memory was 295.7MB in the beginning and 983.6MB in the end (delta: 687.9MB). Free memory was 221.4MB in the beginning and 501.5MB in the end (delta: -280.1MB). Peak memory consumption was 408.2MB. Max. memory is 8.0GB. [2023-12-15 19:48:43,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 213.9MB. Free memory is still 159.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 341.29ms. Allocated memory is still 295.7MB. Free memory was 239.0MB in the beginning and 212.8MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.77ms. Allocated memory is still 295.7MB. Free memory was 212.8MB in the beginning and 200.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.33ms. Allocated memory is still 295.7MB. Free memory was 200.2MB in the beginning and 180.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * RCFGBuilder took 849.85ms. Allocated memory is still 295.7MB. Free memory was 180.3MB in the beginning and 221.9MB in the end (delta: -41.6MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. * TraceAbstraction took 60691.13ms. Allocated memory was 295.7MB in the beginning and 983.6MB in the end (delta: 687.9MB). Free memory was 221.4MB in the beginning and 501.5MB in the end (delta: -280.1MB). Peak memory consumption was 408.2MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.6s, OverallIterations: 12, TraceHistogramMax: 82, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9959 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9786 mSDsluCounter, 16359 SdHoareTripleChecker+Invalid, 11.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11519 mSDsCounter, 5486 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11906 IncrementalHoareTripleChecker+Invalid, 17393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5486 mSolverCounterUnsat, 4840 mSDtfsCounter, 11906 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9508 GetRequests, 9173 SyntacticMatches, 3 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10506 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6389occurred in iteration=10, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 15330 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.4s InterpolantComputationTime, 6714 NumberOfCodeBlocks, 6714 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 9282 ConstructedInterpolants, 0 QuantifiedInterpolants, 45728 SizeOfPredicates, 57 NumberOfNonLiveVariables, 14074 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 236427/239112 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