/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:17:08,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:17:08,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:17:08,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:17:08,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:17:08,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:17:08,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:17:08,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:17:08,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:17:08,290 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:17:08,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:17:08,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:17:08,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:17:08,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:17:08,292 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:17:08,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:17:08,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:17:08,293 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:17:08,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:17:08,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:17:08,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:17:08,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:17:08,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:17:08,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:17:08,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:08,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:17:08,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:17:08,297 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:17:08,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:17:08,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:17:08,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:17:08,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:17:08,500 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:17:08,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.07.cil-1.c [2023-12-21 11:17:09,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:17:09,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:17:09,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.07.cil-1.c [2023-12-21 11:17:09,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bee0d4d3/433a34ec853c4cf696749c594c087451/FLAG01567d3b5 [2023-12-21 11:17:09,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bee0d4d3/433a34ec853c4cf696749c594c087451 [2023-12-21 11:17:09,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:17:09,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:17:09,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:09,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:17:09,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:17:09,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:09,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@946e970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09, skipping insertion in model container [2023-12-21 11:17:09,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:09,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:17:09,802 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.07.cil-1.c[671,684] [2023-12-21 11:17:09,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:09,913 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:17:09,923 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.07.cil-1.c[671,684] [2023-12-21 11:17:09,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:17:09,987 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:17:09,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09 WrapperNode [2023-12-21 11:17:09,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:17:09,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:09,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:17:09,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:17:09,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,040 INFO L138 Inliner]: procedures = 42, calls = 52, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 579 [2023-12-21 11:17:10,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:17:10,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:17:10,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:17:10,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:17:10,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,069 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]. [2023-12-21 11:17:10,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:17:10,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:17:10,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:17:10,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:17:10,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (1/1) ... [2023-12-21 11:17:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:17:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:17:10,125 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) [2023-12-21 11:17:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:17:10,161 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 [2023-12-21 11:17:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:17:10,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:17:10,177 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:17:10,177 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:17:10,177 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:17:10,178 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:17:10,178 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:17:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:17:10,179 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:17:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:17:10,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:17:10,179 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:17:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:17:10,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:17:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:17:10,271 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:17:10,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:17:10,716 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:17:10,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:17:10,764 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-21 11:17:10,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:10 BoogieIcfgContainer [2023-12-21 11:17:10,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:17:10,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:17:10,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:17:10,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:17:10,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:09" (1/3) ... [2023-12-21 11:17:10,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10537e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:10, skipping insertion in model container [2023-12-21 11:17:10,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:09" (2/3) ... [2023-12-21 11:17:10,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10537e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:10, skipping insertion in model container [2023-12-21 11:17:10,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:10" (3/3) ... [2023-12-21 11:17:10,772 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-1.c [2023-12-21 11:17:10,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:17:10,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:17:10,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:17:10,833 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;@18bc404b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:17:10,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:17:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 204 states have (on average 1.7156862745098038) internal successors, (350), 206 states have internal predecessors, (350), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 11:17:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:10,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:10,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:10,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:10,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1216288767, now seen corresponding path program 1 times [2023-12-21 11:17:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539734140] [2023-12-21 11:17:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:11,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:11,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539734140] [2023-12-21 11:17:11,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539734140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:11,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:11,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:17:11,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615685017] [2023-12-21 11:17:11,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:11,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:17:11,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:17:11,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:17:11,268 INFO L87 Difference]: Start difference. First operand has 233 states, 204 states have (on average 1.7156862745098038) internal successors, (350), 206 states have internal predecessors, (350), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:12,056 INFO L93 Difference]: Finished difference Result 540 states and 917 transitions. [2023-12-21 11:17:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:17:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:12,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:12,066 INFO L225 Difference]: With dead ends: 540 [2023-12-21 11:17:12,066 INFO L226 Difference]: Without dead ends: 311 [2023-12-21 11:17:12,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:17:12,071 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 622 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:12,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 420 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:17:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-21 11:17:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 231. [2023-12-21 11:17:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 203 states have (on average 1.6059113300492611) internal successors, (326), 204 states have internal predecessors, (326), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 11:17:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 368 transitions. [2023-12-21 11:17:12,112 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 368 transitions. Word has length 110 [2023-12-21 11:17:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:12,112 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 368 transitions. [2023-12-21 11:17:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 368 transitions. [2023-12-21 11:17:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:12,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:12,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:17:12,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:12,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1045284483, now seen corresponding path program 1 times [2023-12-21 11:17:12,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:12,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331657739] [2023-12-21 11:17:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:12,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:12,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331657739] [2023-12-21 11:17:12,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331657739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:12,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:12,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:17:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017832475] [2023-12-21 11:17:12,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:12,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:17:12,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:17:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:17:12,270 INFO L87 Difference]: Start difference. First operand 231 states and 368 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:13,592 INFO L93 Difference]: Finished difference Result 836 states and 1364 transitions. [2023-12-21 11:17:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:17:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:13,597 INFO L225 Difference]: With dead ends: 836 [2023-12-21 11:17:13,597 INFO L226 Difference]: Without dead ends: 618 [2023-12-21 11:17:13,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:13,599 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 938 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:13,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 701 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:17:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-21 11:17:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 459. [2023-12-21 11:17:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 408 states have (on average 1.6151960784313726) internal successors, (659), 410 states have internal predecessors, (659), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-21 11:17:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 736 transitions. [2023-12-21 11:17:13,653 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 736 transitions. Word has length 110 [2023-12-21 11:17:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:13,653 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 736 transitions. [2023-12-21 11:17:13,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 736 transitions. [2023-12-21 11:17:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:13,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:13,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:17:13,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:13,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 233714177, now seen corresponding path program 1 times [2023-12-21 11:17:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033842419] [2023-12-21 11:17:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:13,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033842419] [2023-12-21 11:17:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033842419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306987369] [2023-12-21 11:17:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:13,915 INFO L87 Difference]: Start difference. First operand 459 states and 736 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:15,729 INFO L93 Difference]: Finished difference Result 1383 states and 2256 transitions. [2023-12-21 11:17:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:15,733 INFO L225 Difference]: With dead ends: 1383 [2023-12-21 11:17:15,733 INFO L226 Difference]: Without dead ends: 937 [2023-12-21 11:17:15,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:17:15,735 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 961 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:15,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1321 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 11:17:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-21 11:17:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 671. [2023-12-21 11:17:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 597 states have (on average 1.6080402010050252) internal successors, (960), 600 states have internal predecessors, (960), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-21 11:17:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1071 transitions. [2023-12-21 11:17:15,767 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1071 transitions. Word has length 110 [2023-12-21 11:17:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:15,768 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1071 transitions. [2023-12-21 11:17:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1071 transitions. [2023-12-21 11:17:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:15,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:15,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:17:15,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:15,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash -649794813, now seen corresponding path program 1 times [2023-12-21 11:17:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807338253] [2023-12-21 11:17:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:15,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807338253] [2023-12-21 11:17:15,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807338253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:15,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:15,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:15,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788925720] [2023-12-21 11:17:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:15,929 INFO L87 Difference]: Start difference. First operand 671 states and 1071 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:16,691 INFO L93 Difference]: Finished difference Result 1603 states and 2611 transitions. [2023-12-21 11:17:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:16,696 INFO L225 Difference]: With dead ends: 1603 [2023-12-21 11:17:16,697 INFO L226 Difference]: Without dead ends: 945 [2023-12-21 11:17:16,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:16,708 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 785 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:16,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 565 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:17:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-21 11:17:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 671. [2023-12-21 11:17:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 597 states have (on average 1.6030150753768844) internal successors, (957), 600 states have internal predecessors, (957), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-21 11:17:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1068 transitions. [2023-12-21 11:17:16,753 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1068 transitions. Word has length 110 [2023-12-21 11:17:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1068 transitions. [2023-12-21 11:17:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1068 transitions. [2023-12-21 11:17:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:16,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:16,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:16,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:17:16,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:16,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -678295103, now seen corresponding path program 1 times [2023-12-21 11:17:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751634529] [2023-12-21 11:17:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751634529] [2023-12-21 11:17:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751634529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766124240] [2023-12-21 11:17:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:16,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:16,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:16,924 INFO L87 Difference]: Start difference. First operand 671 states and 1068 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:17,826 INFO L93 Difference]: Finished difference Result 1599 states and 2594 transitions. [2023-12-21 11:17:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:17,831 INFO L225 Difference]: With dead ends: 1599 [2023-12-21 11:17:17,831 INFO L226 Difference]: Without dead ends: 941 [2023-12-21 11:17:17,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:17,835 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 686 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:17,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 673 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:17:17,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-21 11:17:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 671. [2023-12-21 11:17:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 597 states have (on average 1.5979899497487438) internal successors, (954), 600 states have internal predecessors, (954), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-21 11:17:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1065 transitions. [2023-12-21 11:17:17,864 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1065 transitions. Word has length 110 [2023-12-21 11:17:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:17,864 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1065 transitions. [2023-12-21 11:17:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1065 transitions. [2023-12-21 11:17:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:17,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:17,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:17:17,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:17,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1676090179, now seen corresponding path program 1 times [2023-12-21 11:17:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:17,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949587886] [2023-12-21 11:17:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:18,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:18,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949587886] [2023-12-21 11:17:18,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949587886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:18,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:18,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850330582] [2023-12-21 11:17:18,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:18,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:18,014 INFO L87 Difference]: Start difference. First operand 671 states and 1065 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:18,647 INFO L93 Difference]: Finished difference Result 1595 states and 2577 transitions. [2023-12-21 11:17:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:18,650 INFO L225 Difference]: With dead ends: 1595 [2023-12-21 11:17:18,650 INFO L226 Difference]: Without dead ends: 937 [2023-12-21 11:17:18,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:18,652 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 781 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:18,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 565 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:17:18,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-21 11:17:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 671. [2023-12-21 11:17:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 597 states have (on average 1.592964824120603) internal successors, (951), 600 states have internal predecessors, (951), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-21 11:17:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1062 transitions. [2023-12-21 11:17:18,676 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1062 transitions. Word has length 110 [2023-12-21 11:17:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:18,676 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1062 transitions. [2023-12-21 11:17:18,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1062 transitions. [2023-12-21 11:17:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:18,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:18,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:17:18,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:18,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash -741813887, now seen corresponding path program 1 times [2023-12-21 11:17:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:18,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686741754] [2023-12-21 11:17:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686741754] [2023-12-21 11:17:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686741754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:18,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:18,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645138046] [2023-12-21 11:17:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:18,847 INFO L87 Difference]: Start difference. First operand 671 states and 1062 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:20,426 INFO L93 Difference]: Finished difference Result 2170 states and 3483 transitions. [2023-12-21 11:17:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:17:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:20,431 INFO L225 Difference]: With dead ends: 2170 [2023-12-21 11:17:20,432 INFO L226 Difference]: Without dead ends: 1512 [2023-12-21 11:17:20,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:17:20,434 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 992 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:20,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 847 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:17:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2023-12-21 11:17:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1107. [2023-12-21 11:17:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 987 states have (on average 1.5845997973657548) internal successors, (1564), 992 states have internal predecessors, (1564), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:17:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1747 transitions. [2023-12-21 11:17:20,470 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1747 transitions. Word has length 110 [2023-12-21 11:17:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:20,471 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1747 transitions. [2023-12-21 11:17:20,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1747 transitions. [2023-12-21 11:17:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:20,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:20,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:17:20,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:20,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1512547453, now seen corresponding path program 1 times [2023-12-21 11:17:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678991476] [2023-12-21 11:17:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:20,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678991476] [2023-12-21 11:17:20,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678991476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:20,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:20,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:20,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457365561] [2023-12-21 11:17:20,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:20,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:20,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:20,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:20,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:20,577 INFO L87 Difference]: Start difference. First operand 1107 states and 1747 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:21,336 INFO L93 Difference]: Finished difference Result 2593 states and 4156 transitions. [2023-12-21 11:17:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:21,340 INFO L225 Difference]: With dead ends: 2593 [2023-12-21 11:17:21,341 INFO L226 Difference]: Without dead ends: 1499 [2023-12-21 11:17:21,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:21,343 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 780 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:21,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 565 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:17:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-12-21 11:17:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1107. [2023-12-21 11:17:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 987 states have (on average 1.579533941236069) internal successors, (1559), 992 states have internal predecessors, (1559), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-21 11:17:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1742 transitions. [2023-12-21 11:17:21,379 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1742 transitions. Word has length 110 [2023-12-21 11:17:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1742 transitions. [2023-12-21 11:17:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1742 transitions. [2023-12-21 11:17:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:21,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:21,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:21,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:17:21,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:21,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1787726145, now seen corresponding path program 1 times [2023-12-21 11:17:21,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:21,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646610507] [2023-12-21 11:17:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646610507] [2023-12-21 11:17:21,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646610507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:21,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:21,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:21,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182238913] [2023-12-21 11:17:21,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:21,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:21,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:21,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:21,504 INFO L87 Difference]: Start difference. First operand 1107 states and 1742 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:23,090 INFO L93 Difference]: Finished difference Result 4076 states and 6494 transitions. [2023-12-21 11:17:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:23,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:23,120 INFO L225 Difference]: With dead ends: 4076 [2023-12-21 11:17:23,120 INFO L226 Difference]: Without dead ends: 2982 [2023-12-21 11:17:23,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:23,125 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1192 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:23,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1312 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:17:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2023-12-21 11:17:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1973. [2023-12-21 11:17:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1765 states have (on average 1.5722379603399435) internal successors, (2775), 1774 states have internal predecessors, (2775), 145 states have call successors, (145), 54 states have call predecessors, (145), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-21 11:17:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 3100 transitions. [2023-12-21 11:17:23,245 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 3100 transitions. Word has length 110 [2023-12-21 11:17:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:23,245 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 3100 transitions. [2023-12-21 11:17:23,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 3100 transitions. [2023-12-21 11:17:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:23,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:23,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:17:23,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:23,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1201449923, now seen corresponding path program 1 times [2023-12-21 11:17:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:23,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562696422] [2023-12-21 11:17:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:23,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:23,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562696422] [2023-12-21 11:17:23,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562696422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:23,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:23,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352283991] [2023-12-21 11:17:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:23,361 INFO L87 Difference]: Start difference. First operand 1973 states and 3100 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:24,230 INFO L93 Difference]: Finished difference Result 4555 states and 7251 transitions. [2023-12-21 11:17:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:24,240 INFO L225 Difference]: With dead ends: 4555 [2023-12-21 11:17:24,240 INFO L226 Difference]: Without dead ends: 2595 [2023-12-21 11:17:24,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:24,279 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 684 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:24,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 672 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:17:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2023-12-21 11:17:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 1973. [2023-12-21 11:17:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1765 states have (on average 1.5671388101983004) internal successors, (2766), 1774 states have internal predecessors, (2766), 145 states have call successors, (145), 54 states have call predecessors, (145), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-21 11:17:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 3091 transitions. [2023-12-21 11:17:24,346 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 3091 transitions. Word has length 110 [2023-12-21 11:17:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:24,346 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 3091 transitions. [2023-12-21 11:17:24,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 3091 transitions. [2023-12-21 11:17:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:24,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:24,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:24,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:17:24,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:24,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1217034555, now seen corresponding path program 1 times [2023-12-21 11:17:24,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:24,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549660114] [2023-12-21 11:17:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549660114] [2023-12-21 11:17:24,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549660114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:24,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:24,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:24,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238863957] [2023-12-21 11:17:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:24,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:24,453 INFO L87 Difference]: Start difference. First operand 1973 states and 3091 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:26,248 INFO L93 Difference]: Finished difference Result 7212 states and 11438 transitions. [2023-12-21 11:17:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:26,279 INFO L225 Difference]: With dead ends: 7212 [2023-12-21 11:17:26,279 INFO L226 Difference]: Without dead ends: 5252 [2023-12-21 11:17:26,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:26,291 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1075 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:26,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1312 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:17:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2023-12-21 11:17:26,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 3720. [2023-12-21 11:17:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3340 states have (on average 1.562874251497006) internal successors, (5220), 3357 states have internal predecessors, (5220), 261 states have call successors, (261), 102 states have call predecessors, (261), 118 states have return successors, (358), 276 states have call predecessors, (358), 261 states have call successors, (358) [2023-12-21 11:17:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5839 transitions. [2023-12-21 11:17:26,481 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5839 transitions. Word has length 110 [2023-12-21 11:17:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:26,482 INFO L495 AbstractCegarLoop]: Abstraction has 3720 states and 5839 transitions. [2023-12-21 11:17:26,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5839 transitions. [2023-12-21 11:17:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:26,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:26,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:17:26,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:26,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1198801795, now seen corresponding path program 1 times [2023-12-21 11:17:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126643570] [2023-12-21 11:17:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126643570] [2023-12-21 11:17:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126643570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:26,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:26,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856366244] [2023-12-21 11:17:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:26,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:26,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:26,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:26,608 INFO L87 Difference]: Start difference. First operand 3720 states and 5839 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:28,481 INFO L93 Difference]: Finished difference Result 13581 states and 21576 transitions. [2023-12-21 11:17:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:28,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:28,506 INFO L225 Difference]: With dead ends: 13581 [2023-12-21 11:17:28,506 INFO L226 Difference]: Without dead ends: 9874 [2023-12-21 11:17:28,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:28,513 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 949 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:28,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1312 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:17:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9874 states. [2023-12-21 11:17:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9874 to 7209. [2023-12-21 11:17:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7209 states, 6493 states have (on average 1.56075773910365) internal successors, (10134), 6526 states have internal predecessors, (10134), 485 states have call successors, (485), 198 states have call predecessors, (485), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-21 11:17:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 11379 transitions. [2023-12-21 11:17:28,776 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 11379 transitions. Word has length 110 [2023-12-21 11:17:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 7209 states and 11379 transitions. [2023-12-21 11:17:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 11379 transitions. [2023-12-21 11:17:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:28,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:28,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:17:28,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:28,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1771309307, now seen corresponding path program 1 times [2023-12-21 11:17:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553437356] [2023-12-21 11:17:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:28,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:28,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553437356] [2023-12-21 11:17:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553437356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139775790] [2023-12-21 11:17:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:28,911 INFO L87 Difference]: Start difference. First operand 7209 states and 11379 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:29,800 INFO L93 Difference]: Finished difference Result 16325 states and 26088 transitions. [2023-12-21 11:17:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:17:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:29,833 INFO L225 Difference]: With dead ends: 16325 [2023-12-21 11:17:29,833 INFO L226 Difference]: Without dead ends: 9129 [2023-12-21 11:17:29,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:17:29,846 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 781 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:29,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 564 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:17:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9129 states. [2023-12-21 11:17:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9129 to 7209. [2023-12-21 11:17:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7209 states, 6493 states have (on average 1.5556753426767287) internal successors, (10101), 6526 states have internal predecessors, (10101), 485 states have call successors, (485), 198 states have call predecessors, (485), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-21 11:17:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 11346 transitions. [2023-12-21 11:17:30,171 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 11346 transitions. Word has length 110 [2023-12-21 11:17:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:30,172 INFO L495 AbstractCegarLoop]: Abstraction has 7209 states and 11346 transitions. [2023-12-21 11:17:30,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 11346 transitions. [2023-12-21 11:17:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:30,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:30,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:30,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:17:30,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:30,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:30,178 INFO L85 PathProgramCache]: Analyzing trace with hash -204551357, now seen corresponding path program 1 times [2023-12-21 11:17:30,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:30,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215895639] [2023-12-21 11:17:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:30,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215895639] [2023-12-21 11:17:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215895639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:30,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684301688] [2023-12-21 11:17:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:30,296 INFO L87 Difference]: Start difference. First operand 7209 states and 11346 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:32,175 INFO L93 Difference]: Finished difference Result 25658 states and 40838 transitions. [2023-12-21 11:17:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:32,286 INFO L225 Difference]: With dead ends: 25658 [2023-12-21 11:17:32,286 INFO L226 Difference]: Without dead ends: 18462 [2023-12-21 11:17:32,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:32,390 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 964 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:32,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:17:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18462 states. [2023-12-21 11:17:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18462 to 14219. [2023-12-21 11:17:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14219 states, 12847 states have (on average 1.5537479567214136) internal successors, (19961), 12912 states have internal predecessors, (19961), 917 states have call successors, (917), 390 states have call predecessors, (917), 454 states have return successors, (1710), 980 states have call predecessors, (1710), 917 states have call successors, (1710) [2023-12-21 11:17:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 22588 transitions. [2023-12-21 11:17:32,902 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 22588 transitions. Word has length 110 [2023-12-21 11:17:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:32,903 INFO L495 AbstractCegarLoop]: Abstraction has 14219 states and 22588 transitions. [2023-12-21 11:17:32,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 22588 transitions. [2023-12-21 11:17:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:32,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:32,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:32,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:17:32,911 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:32,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1262389435, now seen corresponding path program 1 times [2023-12-21 11:17:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018453395] [2023-12-21 11:17:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:33,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:33,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018453395] [2023-12-21 11:17:33,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018453395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:33,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:33,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:17:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167987507] [2023-12-21 11:17:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:17:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:17:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:33,014 INFO L87 Difference]: Start difference. First operand 14219 states and 22588 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:35,411 INFO L93 Difference]: Finished difference Result 49786 states and 80030 transitions. [2023-12-21 11:17:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:17:35,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:35,502 INFO L225 Difference]: With dead ends: 49786 [2023-12-21 11:17:35,503 INFO L226 Difference]: Without dead ends: 35580 [2023-12-21 11:17:35,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:17:35,542 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 922 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:35,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1312 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:17:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35580 states. [2023-12-21 11:17:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35580 to 28236. [2023-12-21 11:17:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28236 states, 25584 states have (on average 1.5532754846779238) internal successors, (39739), 25713 states have internal predecessors, (39739), 1749 states have call successors, (1749), 774 states have call predecessors, (1749), 902 states have return successors, (4064), 1876 states have call predecessors, (4064), 1749 states have call successors, (4064) [2023-12-21 11:17:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28236 states to 28236 states and 45552 transitions. [2023-12-21 11:17:36,936 INFO L78 Accepts]: Start accepts. Automaton has 28236 states and 45552 transitions. Word has length 110 [2023-12-21 11:17:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:36,936 INFO L495 AbstractCegarLoop]: Abstraction has 28236 states and 45552 transitions. [2023-12-21 11:17:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 28236 states and 45552 transitions. [2023-12-21 11:17:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 11:17:36,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:36,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:17:36,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:36,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1890075395, now seen corresponding path program 1 times [2023-12-21 11:17:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182193908] [2023-12-21 11:17:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:17:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182193908] [2023-12-21 11:17:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182193908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:37,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:17:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:17:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766708626] [2023-12-21 11:17:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:37,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:17:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:17:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:17:37,164 INFO L87 Difference]: Start difference. First operand 28236 states and 45552 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:40,374 INFO L93 Difference]: Finished difference Result 97009 states and 156586 transitions. [2023-12-21 11:17:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:17:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2023-12-21 11:17:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:40,557 INFO L225 Difference]: With dead ends: 97009 [2023-12-21 11:17:40,557 INFO L226 Difference]: Without dead ends: 68787 [2023-12-21 11:17:40,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:17:40,615 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1184 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1017 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 11:17:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68787 states. [2023-12-21 11:17:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68787 to 55810. [2023-12-21 11:17:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55810 states, 50511 states have (on average 1.5450099978222565) internal successors, (78040), 50897 states have internal predecessors, (78040), 3494 states have call successors, (3494), 1548 states have call predecessors, (3494), 1804 states have return successors, (7997), 3492 states have call predecessors, (7997), 3494 states have call successors, (7997) [2023-12-21 11:17:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55810 states to 55810 states and 89531 transitions. [2023-12-21 11:17:43,078 INFO L78 Accepts]: Start accepts. Automaton has 55810 states and 89531 transitions. Word has length 110 [2023-12-21 11:17:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:43,079 INFO L495 AbstractCegarLoop]: Abstraction has 55810 states and 89531 transitions. [2023-12-21 11:17:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:17:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 55810 states and 89531 transitions. [2023-12-21 11:17:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 11:17:43,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:43,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:17:43,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:43,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1632919576, now seen corresponding path program 1 times [2023-12-21 11:17:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707622315] [2023-12-21 11:17:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:17:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:17:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:17:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:17:43,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707622315] [2023-12-21 11:17:43,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707622315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:17:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916437234] [2023-12-21 11:17:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:17:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:17:43,313 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) [2023-12-21 11:17:43,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:17:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:43,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:17:43,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:17:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 11:17:43,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:17:43,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916437234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:43,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:17:43,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:17:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444742303] [2023-12-21 11:17:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:17:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:17:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:43,535 INFO L87 Difference]: Start difference. First operand 55810 states and 89531 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:17:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:46,867 INFO L93 Difference]: Finished difference Result 166625 states and 269065 transitions. [2023-12-21 11:17:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:17:46,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 178 [2023-12-21 11:17:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:17:47,155 INFO L225 Difference]: With dead ends: 166625 [2023-12-21 11:17:47,155 INFO L226 Difference]: Without dead ends: 110829 [2023-12-21 11:17:47,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:47,249 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 308 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:17:47,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 688 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:17:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110829 states. [2023-12-21 11:17:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110829 to 110569. [2023-12-21 11:17:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110569 states, 100106 states have (on average 1.5421952730106088) internal successors, (154383), 100877 states have internal predecessors, (154383), 6854 states have call successors, (6854), 3096 states have call predecessors, (6854), 3608 states have return successors, (15733), 6723 states have call predecessors, (15733), 6854 states have call successors, (15733) [2023-12-21 11:17:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110569 states to 110569 states and 176970 transitions. [2023-12-21 11:17:51,550 INFO L78 Accepts]: Start accepts. Automaton has 110569 states and 176970 transitions. Word has length 178 [2023-12-21 11:17:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:17:51,550 INFO L495 AbstractCegarLoop]: Abstraction has 110569 states and 176970 transitions. [2023-12-21 11:17:51,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:17:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 110569 states and 176970 transitions. [2023-12-21 11:17:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 11:17:51,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:17:51,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:17:51,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:17:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 11:17:51,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:17:51,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:17:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 745938666, now seen corresponding path program 1 times [2023-12-21 11:17:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:17:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468901368] [2023-12-21 11:17:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:51,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:17:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:17:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:17:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:17:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:17:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:17:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:17:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:17:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:17:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:17:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:17:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468901368] [2023-12-21 11:17:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468901368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:17:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822924650] [2023-12-21 11:17:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:17:52,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:17:52,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:17:52,050 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) [2023-12-21 11:17:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:17:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:17:52,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:17:52,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:17:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 11:17:52,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:17:52,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822924650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:17:52,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:17:52,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:17:52,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742140417] [2023-12-21 11:17:52,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:17:52,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:17:52,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:17:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:17:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:17:52,525 INFO L87 Difference]: Start difference. First operand 110569 states and 176970 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:17:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:17:59,522 INFO L93 Difference]: Finished difference Result 330126 states and 531900 transitions. [2023-12-21 11:17:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:17:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 178 [2023-12-21 11:17:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:18:00,483 INFO L225 Difference]: With dead ends: 330126 [2023-12-21 11:18:00,484 INFO L226 Difference]: Without dead ends: 219571 [2023-12-21 11:18:00,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:00,660 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 303 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:18:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 634 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:18:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219571 states. [2023-12-21 11:18:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219571 to 219053. [2023-12-21 11:18:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219053 states, 198392 states have (on average 1.5393312230331868) internal successors, (305391), 199933 states have internal predecessors, (305391), 13444 states have call successors, (13444), 6192 states have call predecessors, (13444), 7216 states have return successors, (31075), 13055 states have call predecessors, (31075), 13444 states have call successors, (31075) [2023-12-21 11:18:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219053 states to 219053 states and 349910 transitions. [2023-12-21 11:18:09,453 INFO L78 Accepts]: Start accepts. Automaton has 219053 states and 349910 transitions. Word has length 178 [2023-12-21 11:18:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:18:09,453 INFO L495 AbstractCegarLoop]: Abstraction has 219053 states and 349910 transitions. [2023-12-21 11:18:09,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:18:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 219053 states and 349910 transitions. [2023-12-21 11:18:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 11:18:09,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:18:09,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:18:09,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:18:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 11:18:09,922 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:18:09,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:18:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash 989120168, now seen corresponding path program 1 times [2023-12-21 11:18:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:18:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808770661] [2023-12-21 11:18:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:18:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:18:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:18:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 11:18:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:18:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:18:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:18:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:18:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:18:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:18:10,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:18:10,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808770661] [2023-12-21 11:18:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808770661] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:18:10,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364552948] [2023-12-21 11:18:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:18:10,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:18:10,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:18:10,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:18:10,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:18:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:18:10,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:18:10,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:18:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 11:18:10,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:18:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364552948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:18:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:18:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:18:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113532836] [2023-12-21 11:18:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:18:10,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:18:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:18:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:18:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:18:10,528 INFO L87 Difference]: Start difference. First operand 219053 states and 349910 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)