/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_fillercodestructure_filler-pr-co_file-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:23:43,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:23:43,411 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 20:23:43,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:23:43,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:23:43,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:23:43,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:23:43,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:23:43,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:23:43,447 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:23:43,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:23:43,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:23:43,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:23:43,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:23:43,448 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:23:43,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:23:43,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:23:43,449 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:23:43,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:23:43,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:23:43,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:23:43,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:23:43,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:23:43,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:23:43,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:23:43,456 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:23:43,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:23:43,457 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:23:43,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:23:43,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:23:43,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:23:43,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:23:43,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:23:43,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:23:43,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:23:43,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:23:43,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:23:43,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:23:43,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:23:43,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:23:43,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:23:43,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:23:43,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:23:43,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:23:43,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:23:43,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:23:43,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:23:43,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:23:43,690 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:23:43,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2023-12-15 20:23:44,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:23:45,055 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:23:45,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2023-12-15 20:23:45,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20325a48/037154ac8cc54e148bec014f57ba1b71/FLAGeb5badfe4 [2023-12-15 20:23:45,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c20325a48/037154ac8cc54e148bec014f57ba1b71 [2023-12-15 20:23:45,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:23:45,073 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:23:45,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:23:45,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:23:45,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:23:45,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adb5820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45, skipping insertion in model container [2023-12-15 20:23:45,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,109 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:23:45,223 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_fillercodestructure_filler-pr-co_file-11.i[919,932] [2023-12-15 20:23:45,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:23:45,297 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:23:45,305 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_fillercodestructure_filler-pr-co_file-11.i[919,932] [2023-12-15 20:23:45,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:23:45,360 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:23:45,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45 WrapperNode [2023-12-15 20:23:45,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:23:45,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:23:45,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:23:45,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:23:45,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,413 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2023-12-15 20:23:45,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:23:45,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:23:45,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:23:45,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:23:45,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,440 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 20:23:45,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:23:45,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:23:45,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:23:45,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:23:45,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (1/1) ... [2023-12-15 20:23:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:23:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:23:45,513 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 20:23:45,520 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 20:23:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:23:45,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:23:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:23:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:23:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:23:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:23:45,651 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:23:45,654 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:23:46,157 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:23:46,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:23:46,196 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:23:46,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:23:46 BoogieIcfgContainer [2023-12-15 20:23:46,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:23:46,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:23:46,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:23:46,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:23:46,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:23:45" (1/3) ... [2023-12-15 20:23:46,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2662b01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:23:46, skipping insertion in model container [2023-12-15 20:23:46,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:23:45" (2/3) ... [2023-12-15 20:23:46,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2662b01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:23:46, skipping insertion in model container [2023-12-15 20:23:46,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:23:46" (3/3) ... [2023-12-15 20:23:46,202 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-11.i [2023-12-15 20:23:46,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:23:46,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:23:46,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:23:46,284 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;@158939b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:23:46,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:23:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 55 states have internal predecessors, (85), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 20:23:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 20:23:46,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:23:46,297 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:46,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:23:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:23:46,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1419595573, now seen corresponding path program 1 times [2023-12-15 20:23:46,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:23:46,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514981362] [2023-12-15 20:23:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:23:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:23:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:23:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:23:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:23:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:23:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:23:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:23:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:23:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:23:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:23:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:23:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:23:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:23:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:23:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 20:23:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 20:23:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 20:23:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 20:23:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 20:23:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 20:23:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 20:23:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 20:23:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:23:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:23:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:23:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:23:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-15 20:23:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 20:23:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:23:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514981362] [2023-12-15 20:23:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514981362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:23:47,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:23:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:23:47,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600061281] [2023-12-15 20:23:47,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:23:47,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:23:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:23:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:23:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:23:47,451 INFO L87 Difference]: Start difference. First operand has 84 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 55 states have internal predecessors, (85), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:47,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:23:47,572 INFO L93 Difference]: Finished difference Result 194 states and 355 transitions. [2023-12-15 20:23:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:23:47,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 20:23:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:23:47,584 INFO L225 Difference]: With dead ends: 194 [2023-12-15 20:23:47,584 INFO L226 Difference]: Without dead ends: 111 [2023-12-15 20:23:47,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:23:47,590 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 84 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:23:47,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 445 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:23:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-15 20:23:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 94. [2023-12-15 20:23:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.523076923076923) internal successors, (99), 65 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 20:23:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 153 transitions. [2023-12-15 20:23:47,648 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 153 transitions. Word has length 169 [2023-12-15 20:23:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:23:47,652 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 153 transitions. [2023-12-15 20:23:47,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 153 transitions. [2023-12-15 20:23:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 20:23:47,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:23:47,659 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 20:23:47,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:23:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:23:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 610248947, now seen corresponding path program 1 times [2023-12-15 20:23:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:23:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652856085] [2023-12-15 20:23:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:23:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:23:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:23:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:23:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:23:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:23:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:23:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:23:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:23:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:23:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:23:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:23:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:23:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:23:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:23:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 20:23:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 20:23:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 20:23:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 20:23:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 20:23:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 20:23:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 20:23:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 20:23:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:23:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:23:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:23:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:23:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-15 20:23:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 20:23:48,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:23:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652856085] [2023-12-15 20:23:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652856085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:23:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:23:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:23:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326814704] [2023-12-15 20:23:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:23:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:23:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:23:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:23:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:23:48,062 INFO L87 Difference]: Start difference. First operand 94 states and 153 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:23:48,245 INFO L93 Difference]: Finished difference Result 281 states and 458 transitions. [2023-12-15 20:23:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:23:48,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 20:23:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:23:48,252 INFO L225 Difference]: With dead ends: 281 [2023-12-15 20:23:48,252 INFO L226 Difference]: Without dead ends: 188 [2023-12-15 20:23:48,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:23:48,255 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 148 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:23:48,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 446 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:23:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-15 20:23:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 142. [2023-12-15 20:23:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.4) internal successors, (119), 85 states have internal predecessors, (119), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 20:23:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 227 transitions. [2023-12-15 20:23:48,286 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 227 transitions. Word has length 169 [2023-12-15 20:23:48,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:23:48,287 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 227 transitions. [2023-12-15 20:23:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 227 transitions. [2023-12-15 20:23:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 20:23:48,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:23:48,290 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:48,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 20:23:48,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:23:48,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:23:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 967092465, now seen corresponding path program 1 times [2023-12-15 20:23:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:23:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897498193] [2023-12-15 20:23:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:23:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:23:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:23:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:23:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:23:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:23:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:23:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:23:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:23:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:23:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:23:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:23:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:23:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:23:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:23:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 20:23:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 20:23:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 20:23:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 20:23:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 20:23:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 20:23:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 20:23:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 20:23:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:23:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:23:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:23:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:23:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-15 20:23:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 20:23:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:23:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897498193] [2023-12-15 20:23:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897498193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:23:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:23:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:23:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328952683] [2023-12-15 20:23:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:23:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:23:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:23:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:23:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:23:51,482 INFO L87 Difference]: Start difference. First operand 142 states and 227 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:23:52,117 INFO L93 Difference]: Finished difference Result 404 states and 648 transitions. [2023-12-15 20:23:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:23:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2023-12-15 20:23:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:23:52,119 INFO L225 Difference]: With dead ends: 404 [2023-12-15 20:23:52,119 INFO L226 Difference]: Without dead ends: 311 [2023-12-15 20:23:52,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:23:52,120 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 240 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:23:52,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 397 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:23:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-15 20:23:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 293. [2023-12-15 20:23:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 179 states have (on average 1.4022346368715084) internal successors, (251), 180 states have internal predecessors, (251), 108 states have call successors, (108), 5 states have call predecessors, (108), 5 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-15 20:23:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 467 transitions. [2023-12-15 20:23:52,151 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 467 transitions. Word has length 170 [2023-12-15 20:23:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:23:52,151 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 467 transitions. [2023-12-15 20:23:52,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 20:23:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 467 transitions. [2023-12-15 20:23:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 20:23:52,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:23:52,153 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:52,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 20:23:52,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:23:52,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:23:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1552867469, now seen corresponding path program 1 times [2023-12-15 20:23:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:23:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405677259] [2023-12-15 20:23:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:23:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:23:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:23:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:23:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:23:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:23:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:23:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:23:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:23:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:23:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:23:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:23:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:23:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:23:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:23:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 20:23:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 20:23:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 20:23:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 20:23:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 20:23:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 20:23:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 20:23:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 20:23:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:23:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:23:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:23:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:23:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-15 20:23:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-15 20:23:52,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:23:52,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405677259] [2023-12-15 20:23:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405677259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:23:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172787722] [2023-12-15 20:23:52,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:52,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:23:52,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:23:52,570 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 20:23:52,597 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 20:23:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:23:52,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:23:52,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:23:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 308 proven. 69 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2023-12-15 20:23:53,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:23:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-15 20:23:53,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172787722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:23:53,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:23:53,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 13 [2023-12-15 20:23:53,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312344139] [2023-12-15 20:23:53,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:23:53,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:23:53,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:23:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:23:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:23:53,439 INFO L87 Difference]: Start difference. First operand 293 states and 467 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) [2023-12-15 20:23:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:23:53,634 INFO L93 Difference]: Finished difference Result 544 states and 845 transitions. [2023-12-15 20:23:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 20:23:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) Word has length 170 [2023-12-15 20:23:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:23:53,639 INFO L225 Difference]: With dead ends: 544 [2023-12-15 20:23:53,639 INFO L226 Difference]: Without dead ends: 300 [2023-12-15 20:23:53,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:23:53,645 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 267 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:23:53,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 279 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:23:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-15 20:23:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 282. [2023-12-15 20:23:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 165 states have internal predecessors, (210), 108 states have call successors, (108), 9 states have call predecessors, (108), 9 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-15 20:23:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 426 transitions. [2023-12-15 20:23:53,689 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 426 transitions. Word has length 170 [2023-12-15 20:23:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:23:53,690 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 426 transitions. [2023-12-15 20:23:53,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 5 states have call successors, (77), 3 states have call predecessors, (77), 6 states have return successors, (78), 5 states have call predecessors, (78), 5 states have call successors, (78) [2023-12-15 20:23:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 426 transitions. [2023-12-15 20:23:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 20:23:53,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:23:53,692 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:53,709 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 20:23:53,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:23:53,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:23:53,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:23:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash -405519457, now seen corresponding path program 1 times [2023-12-15 20:23:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:23:53,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386241557] [2023-12-15 20:23:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:23:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:23:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:24:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:24:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:24:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:24:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:24:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:24:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:24:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:24:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:24:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:24:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:24:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:24:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:24:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:24:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 20:24:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 20:24:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 20:24:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 20:24:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 20:24:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 20:24:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 20:24:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 20:24:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-15 20:24:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-15 20:24:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 20:24:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-15 20:24:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-15 20:24:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 75 proven. 201 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-15 20:24:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:24:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386241557] [2023-12-15 20:24:35,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386241557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:24:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692864750] [2023-12-15 20:24:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:24:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:24:35,703 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 20:24:35,749 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 20:24:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:24:35,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 20:24:35,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:24:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 724 proven. 204 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-15 20:24:37,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:24:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 72 proven. 222 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-15 20:24:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692864750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:24:45,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:24:45,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 53 [2023-12-15 20:24:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018347318] [2023-12-15 20:24:45,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:24:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-15 20:24:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:24:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-15 20:24:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2438, Unknown=0, NotChecked=0, Total=2756 [2023-12-15 20:24:45,056 INFO L87 Difference]: Start difference. First operand 282 states and 426 transitions. Second operand has 53 states, 47 states have (on average 2.74468085106383) internal successors, (129), 46 states have internal predecessors, (129), 16 states have call successors, (76), 5 states have call predecessors, (76), 11 states have return successors, (77), 17 states have call predecessors, (77), 16 states have call successors, (77) Received shutdown request... [2023-12-15 20:24:51,802 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 20:24:51,826 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:24:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-15 20:24:51,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=1716, Invalid=7026, Unknown=0, NotChecked=0, Total=8742 [2023-12-15 20:24:51,963 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 266 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:24:51,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 360 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 20:24:51,964 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:24:51,970 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 20:24:52,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:24:52,171 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (282states) and FLOYD_HOARE automaton (currently 43 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 94 known predicates. [2023-12-15 20:24:52,174 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-15 20:24:52,176 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:24:52,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:24:52 BoogieIcfgContainer [2023-12-15 20:24:52,177 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:24:52,177 INFO L158 Benchmark]: Toolchain (without parser) took 67104.86ms. Allocated memory was 204.5MB in the beginning and 845.2MB in the end (delta: 640.7MB). Free memory was 157.5MB in the beginning and 678.7MB in the end (delta: -521.2MB). Peak memory consumption was 120.6MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.44ms. Allocated memory is still 204.5MB. Free memory was 157.5MB in the beginning and 141.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.57ms. Allocated memory is still 204.5MB. Free memory was 141.8MB in the beginning and 139.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: Boogie Preprocessor took 40.06ms. Allocated memory is still 204.5MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: RCFGBuilder took 742.29ms. Allocated memory is still 204.5MB. Free memory was 135.5MB in the beginning and 109.7MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,178 INFO L158 Benchmark]: TraceAbstraction took 65979.38ms. Allocated memory was 204.5MB in the beginning and 845.2MB in the end (delta: 640.7MB). Free memory was 109.3MB in the beginning and 678.7MB in the end (delta: -569.4MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-12-15 20:24:52,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 287.44ms. Allocated memory is still 204.5MB. Free memory was 157.5MB in the beginning and 141.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.57ms. Allocated memory is still 204.5MB. Free memory was 141.8MB in the beginning and 139.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.06ms. Allocated memory is still 204.5MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 742.29ms. Allocated memory is still 204.5MB. Free memory was 135.5MB in the beginning and 109.7MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 65979.38ms. Allocated memory was 204.5MB in the beginning and 845.2MB in the end (delta: 640.7MB). Free memory was 109.3MB in the beginning and 678.7MB in the end (delta: -569.4MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (282states) and FLOYD_HOARE automaton (currently 43 states, 53 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 94 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.9s, OverallIterations: 5, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1007 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1005 mSDsluCounter, 1927 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1428 mSDsCounter, 689 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1903 IncrementalHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 689 mSolverCounterUnsat, 499 mSDtfsCounter, 1903 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1052 GetRequests, 925 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 21.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 99 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 56.4s InterpolantComputationTime, 1190 NumberOfCodeBlocks, 1190 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1522 ConstructedInterpolants, 0 QuantifiedInterpolants, 19027 SizeOfPredicates, 21 NumberOfNonLiveVariables, 826 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 11802/12636 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