/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:42:31,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:42:31,532 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:42:31,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:42:31,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:42:31,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:42:31,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:42:31,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:42:31,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:42:31,570 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:42:31,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:42:31,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:42:31,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:42:31,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:42:31,571 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:42:31,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:42:31,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:42:31,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:42:31,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:42:31,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:42:31,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:42:31,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:42:31,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:42:31,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:42:31,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:42:31,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:42:31,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:42:31,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:42:31,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:42:31,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:42:31,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:42:31,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:42:31,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:42:31,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:42:31,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:42:31,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:42:31,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:42:31,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:42:31,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:42:31,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:42:31,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:42:31,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:42:31,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:42:31,584 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:42:31,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:42:31,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:42:31,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:42:31,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:42:31,788 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:42:31,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c [2023-12-15 17:42:32,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:42:33,138 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:42:33,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c [2023-12-15 17:42:33,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2edbeb25/3d708cc16c04424ebc7230f8323c3152/FLAGf9a55af4a [2023-12-15 17:42:33,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2edbeb25/3d708cc16c04424ebc7230f8323c3152 [2023-12-15 17:42:33,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:42:33,201 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:42:33,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:42:33,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:42:33,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:42:33,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:42:33" (1/1) ... [2023-12-15 17:42:33,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc59a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:33, skipping insertion in model container [2023-12-15 17:42:33,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:42:33" (1/1) ... [2023-12-15 17:42:33,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:42:34,391 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2023-12-15 17:42:34,414 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2023-12-15 17:42:34,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:42:34,554 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:42:35,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2023-12-15 17:42:35,105 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2023-12-15 17:42:35,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:42:35,179 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:42:35,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35 WrapperNode [2023-12-15 17:42:35,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:42:35,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:42:35,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:42:35,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:42:35,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,450 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12819 [2023-12-15 17:42:35,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:42:35,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:42:35,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:42:35,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:42:35,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,662 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 17:42:35,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:35,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:42:36,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:42:36,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:42:36,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:42:36,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (1/1) ... [2023-12-15 17:42:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:42:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:42:36,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:42:36,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:42:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 17:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 17:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:42:36,203 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:42:36,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:42:41,265 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:42:41,339 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:42:41,339 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-15 17:42:41,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:42:41 BoogieIcfgContainer [2023-12-15 17:42:41,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:42:41,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:42:41,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:42:41,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:42:41,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:42:33" (1/3) ... [2023-12-15 17:42:41,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcfe511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:42:41, skipping insertion in model container [2023-12-15 17:42:41,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:42:35" (2/3) ... [2023-12-15 17:42:41,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcfe511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:42:41, skipping insertion in model container [2023-12-15 17:42:41,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:42:41" (3/3) ... [2023-12-15 17:42:41,348 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2023-12-15 17:42:41,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:42:41,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:42:41,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:42:41,436 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;@3a947dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:42:41,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:42:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-15 17:42:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:41,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:41,457 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] [2023-12-15 17:42:41,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:41,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 945865180, now seen corresponding path program 1 times [2023-12-15 17:42:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336799083] [2023-12-15 17:42:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:41,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:41,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:41,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336799083] [2023-12-15 17:42:41,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336799083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:41,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:41,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:42:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830008392] [2023-12-15 17:42:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:42:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:42:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:42:41,818 INFO L87 Difference]: Start difference. First operand has 2318 states, 2287 states have (on average 1.8828159160472235) internal successors, (4306), 2292 states have internal predecessors, (4306), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:42,575 INFO L93 Difference]: Finished difference Result 4689 states and 8790 transitions. [2023-12-15 17:42:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:42:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:42,592 INFO L225 Difference]: With dead ends: 4689 [2023-12-15 17:42:42,593 INFO L226 Difference]: Without dead ends: 2373 [2023-12-15 17:42:42,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:42:42,608 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 494 mSDsluCounter, 12068 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 16203 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:42,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 16203 Invalid, 571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:42:42,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-15 17:42:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2313. [2023-12-15 17:42:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2284 states have (on average 1.8476357267950962) internal successors, (4220), 2287 states have internal predecessors, (4220), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 17:42:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4260 transitions. [2023-12-15 17:42:42,699 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4260 transitions. Word has length 92 [2023-12-15 17:42:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:42,699 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4260 transitions. [2023-12-15 17:42:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4260 transitions. [2023-12-15 17:42:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:42,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:42,702 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] [2023-12-15 17:42:42,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:42:42,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -378991014, now seen corresponding path program 1 times [2023-12-15 17:42:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145648281] [2023-12-15 17:42:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:42,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:42,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145648281] [2023-12-15 17:42:42,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145648281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:42,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:42,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:42:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535740781] [2023-12-15 17:42:42,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:42:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:42:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:42:42,896 INFO L87 Difference]: Start difference. First operand 2313 states and 4260 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:44,090 INFO L93 Difference]: Finished difference Result 2800 states and 5052 transitions. [2023-12-15 17:42:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:42:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:44,099 INFO L225 Difference]: With dead ends: 2800 [2023-12-15 17:42:44,100 INFO L226 Difference]: Without dead ends: 2619 [2023-12-15 17:42:44,100 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 [2023-12-15 17:42:44,101 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4687 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:44,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 16438 Invalid, 1208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:42:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-12-15 17:42:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2498. [2023-12-15 17:42:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2448 states have (on average 1.8321078431372548) internal successors, (4485), 2452 states have internal predecessors, (4485), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-12-15 17:42:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4556 transitions. [2023-12-15 17:42:44,157 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4556 transitions. Word has length 92 [2023-12-15 17:42:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:44,158 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4556 transitions. [2023-12-15 17:42:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4556 transitions. [2023-12-15 17:42:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:44,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:44,160 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] [2023-12-15 17:42:44,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:42:44,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:44,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash 482674902, now seen corresponding path program 1 times [2023-12-15 17:42:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:44,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319137523] [2023-12-15 17:42:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319137523] [2023-12-15 17:42:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319137523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024249939] [2023-12-15 17:42:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:44,294 INFO L87 Difference]: Start difference. First operand 2498 states and 4556 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:45,946 INFO L93 Difference]: Finished difference Result 3235 states and 5750 transitions. [2023-12-15 17:42:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:42:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:45,956 INFO L225 Difference]: With dead ends: 3235 [2023-12-15 17:42:45,957 INFO L226 Difference]: Without dead ends: 2869 [2023-12-15 17:42:45,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:42:45,959 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4702 mSDsluCounter, 16709 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4714 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:45,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4714 Valid, 20941 Invalid, 1888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:42:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2023-12-15 17:42:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2670. [2023-12-15 17:42:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8176221623701423) internal successors, (4724), 2604 states have internal predecessors, (4724), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-15 17:42:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4825 transitions. [2023-12-15 17:42:46,025 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4825 transitions. Word has length 92 [2023-12-15 17:42:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:46,026 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4825 transitions. [2023-12-15 17:42:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4825 transitions. [2023-12-15 17:42:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:46,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:46,027 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] [2023-12-15 17:42:46,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:42:46,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:46,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash 509740504, now seen corresponding path program 1 times [2023-12-15 17:42:46,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:46,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168524613] [2023-12-15 17:42:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:46,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:46,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:46,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168524613] [2023-12-15 17:42:46,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168524613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:46,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:46,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985458755] [2023-12-15 17:42:46,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:46,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:46,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:46,158 INFO L87 Difference]: Start difference. First operand 2670 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:46,953 INFO L93 Difference]: Finished difference Result 3409 states and 6031 transitions. [2023-12-15 17:42:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:46,963 INFO L225 Difference]: With dead ends: 3409 [2023-12-15 17:42:46,963 INFO L226 Difference]: Without dead ends: 2871 [2023-12-15 17:42:46,966 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 [2023-12-15 17:42:46,972 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4506 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 20363 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:42:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-12-15 17:42:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2670. [2023-12-15 17:42:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.816467872258561) internal successors, (4721), 2604 states have internal predecessors, (4721), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-15 17:42:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4822 transitions. [2023-12-15 17:42:47,038 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4822 transitions. Word has length 92 [2023-12-15 17:42:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:47,039 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4822 transitions. [2023-12-15 17:42:47,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4822 transitions. [2023-12-15 17:42:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:47,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:47,042 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] [2023-12-15 17:42:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:42:47,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:47,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2051122342, now seen corresponding path program 1 times [2023-12-15 17:42:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626146006] [2023-12-15 17:42:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:47,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:47,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626146006] [2023-12-15 17:42:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626146006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:47,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850420663] [2023-12-15 17:42:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:47,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:47,158 INFO L87 Difference]: Start difference. First operand 2670 states and 4822 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:47,855 INFO L93 Difference]: Finished difference Result 3405 states and 6014 transitions. [2023-12-15 17:42:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:47,865 INFO L225 Difference]: With dead ends: 3405 [2023-12-15 17:42:47,866 INFO L226 Difference]: Without dead ends: 2867 [2023-12-15 17:42:47,869 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 [2023-12-15 17:42:47,869 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4504 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:47,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4517 Valid, 20363 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:42:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2023-12-15 17:42:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2670. [2023-12-15 17:42:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8153135821469797) internal successors, (4718), 2604 states have internal predecessors, (4718), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-15 17:42:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4819 transitions. [2023-12-15 17:42:47,937 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4819 transitions. Word has length 92 [2023-12-15 17:42:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:47,937 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4819 transitions. [2023-12-15 17:42:47,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4819 transitions. [2023-12-15 17:42:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:47,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:47,938 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] [2023-12-15 17:42:47,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:42:47,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:47,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1163899496, now seen corresponding path program 1 times [2023-12-15 17:42:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134255423] [2023-12-15 17:42:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:48,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:48,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134255423] [2023-12-15 17:42:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134255423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:48,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:48,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:48,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669739023] [2023-12-15 17:42:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:48,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:48,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:48,043 INFO L87 Difference]: Start difference. First operand 2670 states and 4819 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:48,815 INFO L93 Difference]: Finished difference Result 3401 states and 5997 transitions. [2023-12-15 17:42:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:42:48,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:48,824 INFO L225 Difference]: With dead ends: 3401 [2023-12-15 17:42:48,824 INFO L226 Difference]: Without dead ends: 2863 [2023-12-15 17:42:48,826 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 [2023-12-15 17:42:48,827 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 4502 mSDsluCounter, 16262 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 20363 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:48,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 20363 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:42:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2023-12-15 17:42:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2670. [2023-12-15 17:42:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2599 states have (on average 1.8141592920353982) internal successors, (4715), 2604 states have internal predecessors, (4715), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-15 17:42:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4816 transitions. [2023-12-15 17:42:48,898 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4816 transitions. Word has length 92 [2023-12-15 17:42:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:48,898 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4816 transitions. [2023-12-15 17:42:48,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4816 transitions. [2023-12-15 17:42:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:48,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:48,899 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] [2023-12-15 17:42:48,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:42:48,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:48,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1220025242, now seen corresponding path program 1 times [2023-12-15 17:42:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456955720] [2023-12-15 17:42:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:49,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456955720] [2023-12-15 17:42:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456955720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807632681] [2023-12-15 17:42:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:49,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:49,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:49,034 INFO L87 Difference]: Start difference. First operand 2670 states and 4816 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:50,446 INFO L93 Difference]: Finished difference Result 3995 states and 6919 transitions. [2023-12-15 17:42:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:50,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:50,462 INFO L225 Difference]: With dead ends: 3995 [2023-12-15 17:42:50,462 INFO L226 Difference]: Without dead ends: 3457 [2023-12-15 17:42:50,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:50,464 INFO L413 NwaCegarLoop]: 4125 mSDtfsCounter, 4914 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4932 SdHoareTripleChecker+Valid, 20541 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:50,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4932 Valid, 20541 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:42:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-15 17:42:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3023. [2023-12-15 17:42:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2912 states have (on average 1.7870879120879122) internal successors, (5204), 2919 states have internal predecessors, (5204), 75 states have call successors, (75), 31 states have call predecessors, (75), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-12-15 17:42:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 5365 transitions. [2023-12-15 17:42:50,545 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 5365 transitions. Word has length 92 [2023-12-15 17:42:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:50,546 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 5365 transitions. [2023-12-15 17:42:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 5365 transitions. [2023-12-15 17:42:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:50,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:50,549 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] [2023-12-15 17:42:50,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:42:50,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:50,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1296926040, now seen corresponding path program 1 times [2023-12-15 17:42:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691227698] [2023-12-15 17:42:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:50,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691227698] [2023-12-15 17:42:50,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691227698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:50,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:50,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:50,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839805401] [2023-12-15 17:42:50,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:50,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:50,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:50,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:50,676 INFO L87 Difference]: Start difference. First operand 3023 states and 5365 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:52,158 INFO L93 Difference]: Finished difference Result 5308 states and 8978 transitions. [2023-12-15 17:42:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:52,189 INFO L225 Difference]: With dead ends: 5308 [2023-12-15 17:42:52,190 INFO L226 Difference]: Without dead ends: 4417 [2023-12-15 17:42:52,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:52,194 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4711 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4722 SdHoareTripleChecker+Valid, 20928 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:52,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4722 Valid, 20928 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 17:42:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2023-12-15 17:42:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3680. [2023-12-15 17:42:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3491 states have (on average 1.7462045259238042) internal successors, (6096), 3502 states have internal predecessors, (6096), 125 states have call successors, (125), 55 states have call predecessors, (125), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-15 17:42:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 6379 transitions. [2023-12-15 17:42:52,282 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 6379 transitions. Word has length 92 [2023-12-15 17:42:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:52,283 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 6379 transitions. [2023-12-15 17:42:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 6379 transitions. [2023-12-15 17:42:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:52,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:52,284 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] [2023-12-15 17:42:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:42:52,284 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:52,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash 329575386, now seen corresponding path program 1 times [2023-12-15 17:42:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:52,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461583493] [2023-12-15 17:42:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:52,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461583493] [2023-12-15 17:42:52,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461583493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:52,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:52,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592690480] [2023-12-15 17:42:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:52,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:52,399 INFO L87 Difference]: Start difference. First operand 3680 states and 6379 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:53,838 INFO L93 Difference]: Finished difference Result 7751 states and 12786 transitions. [2023-12-15 17:42:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:53,852 INFO L225 Difference]: With dead ends: 7751 [2023-12-15 17:42:53,852 INFO L226 Difference]: Without dead ends: 6203 [2023-12-15 17:42:53,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:53,857 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4792 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:53,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 20932 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:42:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2023-12-15 17:42:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5033. [2023-12-15 17:42:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4692 states have (on average 1.696078431372549) internal successors, (7958), 4711 states have internal predecessors, (7958), 221 states have call successors, (221), 103 states have call predecessors, (221), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-15 17:42:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 8495 transitions. [2023-12-15 17:42:53,986 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 8495 transitions. Word has length 92 [2023-12-15 17:42:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:53,987 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 8495 transitions. [2023-12-15 17:42:53,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 8495 transitions. [2023-12-15 17:42:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:53,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:53,989 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] [2023-12-15 17:42:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:42:53,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:53,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2056934120, now seen corresponding path program 1 times [2023-12-15 17:42:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:53,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416781180] [2023-12-15 17:42:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:53,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416781180] [2023-12-15 17:42:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416781180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:54,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:54,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881879317] [2023-12-15 17:42:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:54,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:54,106 INFO L87 Difference]: Start difference. First operand 5033 states and 8495 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:55,486 INFO L93 Difference]: Finished difference Result 12630 states and 20476 transitions. [2023-12-15 17:42:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:55,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:55,510 INFO L225 Difference]: With dead ends: 12630 [2023-12-15 17:42:55,510 INFO L226 Difference]: Without dead ends: 9729 [2023-12-15 17:42:55,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:55,522 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4762 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 20932 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:42:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2023-12-15 17:42:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 7738. [2023-12-15 17:42:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7101 states have (on average 1.6470919588790311) internal successors, (11696), 7136 states have internal predecessors, (11696), 405 states have call successors, (405), 199 states have call predecessors, (405), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-12-15 17:42:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 12779 transitions. [2023-12-15 17:42:55,844 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 12779 transitions. Word has length 92 [2023-12-15 17:42:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:55,844 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 12779 transitions. [2023-12-15 17:42:55,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 12779 transitions. [2023-12-15 17:42:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:55,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:55,848 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] [2023-12-15 17:42:55,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:42:55,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:55,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1745407002, now seen corresponding path program 1 times [2023-12-15 17:42:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460931520] [2023-12-15 17:42:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460931520] [2023-12-15 17:42:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460931520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:55,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:42:55,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457029815] [2023-12-15 17:42:55,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:55,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:42:55,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:42:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:42:55,953 INFO L87 Difference]: Start difference. First operand 7738 states and 12779 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:57,496 INFO L93 Difference]: Finished difference Result 21731 states and 35014 transitions. [2023-12-15 17:42:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:42:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:57,546 INFO L225 Difference]: With dead ends: 21731 [2023-12-15 17:42:57,547 INFO L226 Difference]: Without dead ends: 16125 [2023-12-15 17:42:57,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:42:57,573 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4684 mSDsluCounter, 16704 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 20932 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:57,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 20932 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:42:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2023-12-15 17:42:58,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 13180. [2023-12-15 17:42:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 11967 states have (on average 1.6100944263390993) internal successors, (19268), 12034 states have internal predecessors, (19268), 757 states have call successors, (757), 391 states have call predecessors, (757), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2023-12-15 17:42:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 21573 transitions. [2023-12-15 17:42:58,090 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 21573 transitions. Word has length 92 [2023-12-15 17:42:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:42:58,090 INFO L495 AbstractCegarLoop]: Abstraction has 13180 states and 21573 transitions. [2023-12-15 17:42:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 21573 transitions. [2023-12-15 17:42:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 17:42:58,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:42:58,098 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] [2023-12-15 17:42:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:42:58,098 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:42:58,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:42:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash 529253276, now seen corresponding path program 1 times [2023-12-15 17:42:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:42:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122207078] [2023-12-15 17:42:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:42:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:42:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:42:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:42:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:42:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:42:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:42:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:42:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:42:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:42:58,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122207078] [2023-12-15 17:42:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122207078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:42:58,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:42:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:42:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145041888] [2023-12-15 17:42:58,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:42:58,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:42:58,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:42:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:42:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:42:58,188 INFO L87 Difference]: Start difference. First operand 13180 states and 21573 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:42:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:42:59,693 INFO L93 Difference]: Finished difference Result 33458 states and 53843 transitions. [2023-12-15 17:42:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:42:59,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-15 17:42:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:42:59,752 INFO L225 Difference]: With dead ends: 33458 [2023-12-15 17:42:59,752 INFO L226 Difference]: Without dead ends: 22411 [2023-12-15 17:42:59,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:42:59,788 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4889 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:42:59,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4920 Valid, 16668 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:42:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2023-12-15 17:43:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 18624. [2023-12-15 17:43:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 16782 states have (on average 1.5839590036944344) internal successors, (26582), 16914 states have internal predecessors, (26582), 1156 states have call successors, (1156), 589 states have call predecessors, (1156), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2023-12-15 17:43:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 29929 transitions. [2023-12-15 17:43:00,495 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 29929 transitions. Word has length 92 [2023-12-15 17:43:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:00,495 INFO L495 AbstractCegarLoop]: Abstraction has 18624 states and 29929 transitions. [2023-12-15 17:43:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:43:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 29929 transitions. [2023-12-15 17:43:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 17:43:00,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:00,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:43:00,526 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1655270481, now seen corresponding path program 1 times [2023-12-15 17:43:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270481443] [2023-12-15 17:43:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:43:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:43:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:43:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:43:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:43:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:43:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-15 17:43:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:43:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270481443] [2023-12-15 17:43:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270481443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:43:00,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471895078] [2023-12-15 17:43:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:00,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:43:00,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:43:00,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:43:00,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:43:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:00,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:43:00,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:43:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 17:43:00,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:43:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471895078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:00,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:43:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:43:00,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192395852] [2023-12-15 17:43:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:43:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:43:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:00,882 INFO L87 Difference]: Start difference. First operand 18624 states and 29929 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:01,884 INFO L93 Difference]: Finished difference Result 51207 states and 81635 transitions. [2023-12-15 17:43:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:43:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-15 17:43:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:01,982 INFO L225 Difference]: With dead ends: 51207 [2023-12-15 17:43:01,982 INFO L226 Difference]: Without dead ends: 34716 [2023-12-15 17:43:02,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:02,025 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4203 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:02,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:43:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34716 states. [2023-12-15 17:43:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34716 to 34614. [2023-12-15 17:43:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34614 states, 31040 states have (on average 1.562596649484536) internal successors, (48503), 31301 states have internal predecessors, (48503), 2206 states have call successors, (2206), 1175 states have call predecessors, (2206), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2023-12-15 17:43:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 54924 transitions. [2023-12-15 17:43:03,203 INFO L78 Accepts]: Start accepts. Automaton has 34614 states and 54924 transitions. Word has length 148 [2023-12-15 17:43:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:03,204 INFO L495 AbstractCegarLoop]: Abstraction has 34614 states and 54924 transitions. [2023-12-15 17:43:03,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34614 states and 54924 transitions. [2023-12-15 17:43:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 17:43:03,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:03,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:03,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:43:03,464 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,SelfDestructingSolverStorable12 [2023-12-15 17:43:03,464 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash -809491181, now seen corresponding path program 1 times [2023-12-15 17:43:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968011780] [2023-12-15 17:43:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:43:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:43:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:43:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:43:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:43:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:43:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-15 17:43:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:43:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968011780] [2023-12-15 17:43:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968011780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:43:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684982256] [2023-12-15 17:43:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:03,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:43:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:43:03,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:43:03,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:43:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:03,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:43:03,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:43:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 17:43:03,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:43:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684982256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:03,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:43:03,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:43:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194911177] [2023-12-15 17:43:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:43:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:43:03,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:03,784 INFO L87 Difference]: Start difference. First operand 34614 states and 54924 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:05,610 INFO L93 Difference]: Finished difference Result 98977 states and 156780 transitions. [2023-12-15 17:43:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:43:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-15 17:43:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:05,806 INFO L225 Difference]: With dead ends: 98977 [2023-12-15 17:43:05,807 INFO L226 Difference]: Without dead ends: 66496 [2023-12-15 17:43:05,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:05,861 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4193 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4193 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:05,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4193 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:43:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66496 states. [2023-12-15 17:43:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66496 to 66296. [2023-12-15 17:43:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66296 states, 59260 states have (on average 1.5483462706716167) internal successors, (91755), 59779 states have internal predecessors, (91755), 4304 states have call successors, (4304), 2347 states have call predecessors, (4304), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2023-12-15 17:43:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66296 states to 66296 states and 104320 transitions. [2023-12-15 17:43:08,437 INFO L78 Accepts]: Start accepts. Automaton has 66296 states and 104320 transitions. Word has length 148 [2023-12-15 17:43:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:08,438 INFO L495 AbstractCegarLoop]: Abstraction has 66296 states and 104320 transitions. [2023-12-15 17:43:08,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 66296 states and 104320 transitions. [2023-12-15 17:43:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 17:43:08,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:08,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:08,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:43:08,877 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,SelfDestructingSolverStorable13 [2023-12-15 17:43:08,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:08,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1463777195, now seen corresponding path program 1 times [2023-12-15 17:43:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:08,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069529861] [2023-12-15 17:43:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:43:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:43:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:43:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:43:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:43:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:43:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-15 17:43:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:43:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069529861] [2023-12-15 17:43:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069529861] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:43:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675093686] [2023-12-15 17:43:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:43:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:43:08,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:43:08,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:43:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:09,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:43:09,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:43:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 17:43:09,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:43:09,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675093686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:09,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:43:09,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:43:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800880736] [2023-12-15 17:43:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:43:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:43:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:09,159 INFO L87 Difference]: Start difference. First operand 66296 states and 104320 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:12,945 INFO L93 Difference]: Finished difference Result 193419 states and 304886 transitions. [2023-12-15 17:43:12,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:43:12,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2023-12-15 17:43:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:43:13,383 INFO L225 Difference]: With dead ends: 193419 [2023-12-15 17:43:13,383 INFO L226 Difference]: Without dead ends: 129256 [2023-12-15 17:43:13,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:13,482 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4208 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:13,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 4481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:43:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129256 states. [2023-12-15 17:43:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129256 to 128860. [2023-12-15 17:43:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128860 states, 115008 states have (on average 1.538840776293823) internal successors, (176979), 116043 states have internal predecessors, (176979), 8396 states have call successors, (8396), 4687 states have call predecessors, (8396), 5454 states have return successors, (16249), 8193 states have call predecessors, (16249), 8394 states have call successors, (16249) [2023-12-15 17:43:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128860 states to 128860 states and 201624 transitions. [2023-12-15 17:43:18,400 INFO L78 Accepts]: Start accepts. Automaton has 128860 states and 201624 transitions. Word has length 148 [2023-12-15 17:43:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:43:18,401 INFO L495 AbstractCegarLoop]: Abstraction has 128860 states and 201624 transitions. [2023-12-15 17:43:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:43:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 128860 states and 201624 transitions. [2023-12-15 17:43:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 17:43:18,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:43:18,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:18,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 17:43:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:43:18,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:43:18,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:43:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1076426963, now seen corresponding path program 1 times [2023-12-15 17:43:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:43:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083668392] [2023-12-15 17:43:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:43:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:43:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 17:43:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 17:43:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 17:43:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 17:43:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 17:43:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:43:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-15 17:43:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:43:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:43:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083668392] [2023-12-15 17:43:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083668392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:43:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306801905] [2023-12-15 17:43:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:43:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:43:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:43:19,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:43:19,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:43:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:43:19,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:43:19,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:43:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-15 17:43:19,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:43:19,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306801905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:43:19,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:43:19,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:43:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394212778] [2023-12-15 17:43:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:43:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:43:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:43:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:43:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:19,199 INFO L87 Difference]: Start difference. First operand 128860 states and 201624 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:43:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:43:26,523 INFO L93 Difference]: Finished difference Result 376945 states and 593805 transitions. [2023-12-15 17:43:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:43:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2023-12-15 17:43:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2023-12-15 17:43:27,367 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:43:27,405 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:43:27,548 INFO L225 Difference]: With dead ends: 376945 [2023-12-15 17:43:27,548 INFO L226 Difference]: Without dead ends: 250219 [2023-12-15 17:43:27,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:43:27,737 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 255 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:43:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 8706 Invalid, 78 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:43:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250219 states. [2023-12-15 17:43:27,906 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:43:27,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 17:43:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 17:43:28,108 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 17:43:28,110 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:43:28,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:43:28,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:43:28,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:43:28 BoogieIcfgContainer [2023-12-15 17:43:28,119 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:43:28,119 INFO L158 Benchmark]: Toolchain (without parser) took 54918.23ms. Allocated memory was 202.4MB in the beginning and 7.0GB in the end (delta: 6.8GB). Free memory was 124.9MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 17:43:28,120 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:43:28,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1979.90ms. Allocated memory was 202.4MB in the beginning and 278.9MB in the end (delta: 76.5MB). Free memory was 124.6MB in the beginning and 174.4MB in the end (delta: -49.8MB). Peak memory consumption was 126.3MB. Max. memory is 8.0GB. [2023-12-15 17:43:28,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 268.01ms. Allocated memory is still 278.9MB. Free memory was 174.4MB in the beginning and 94.7MB in the end (delta: 79.7MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2023-12-15 17:43:28,120 INFO L158 Benchmark]: Boogie Preprocessor took 545.40ms. Allocated memory was 278.9MB in the beginning and 521.1MB in the end (delta: 242.2MB). Free memory was 94.7MB in the beginning and 374.5MB in the end (delta: -279.8MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-12-15 17:43:28,123 INFO L158 Benchmark]: RCFGBuilder took 5327.25ms. Allocated memory was 521.1MB in the beginning and 795.9MB in the end (delta: 274.7MB). Free memory was 374.1MB in the beginning and 520.5MB in the end (delta: -146.4MB). Peak memory consumption was 469.2MB. Max. memory is 8.0GB. [2023-12-15 17:43:28,123 INFO L158 Benchmark]: TraceAbstraction took 46776.22ms. Allocated memory was 795.9MB in the beginning and 7.0GB in the end (delta: 6.2GB). Free memory was 520.0MB in the beginning and 5.3GB in the end (delta: -4.8GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 17:43:28,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1979.90ms. Allocated memory was 202.4MB in the beginning and 278.9MB in the end (delta: 76.5MB). Free memory was 124.6MB in the beginning and 174.4MB in the end (delta: -49.8MB). Peak memory consumption was 126.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 268.01ms. Allocated memory is still 278.9MB. Free memory was 174.4MB in the beginning and 94.7MB in the end (delta: 79.7MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 545.40ms. Allocated memory was 278.9MB in the beginning and 521.1MB in the end (delta: 242.2MB). Free memory was 94.7MB in the beginning and 374.5MB in the end (delta: -279.8MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. * RCFGBuilder took 5327.25ms. Allocated memory was 521.1MB in the beginning and 795.9MB in the end (delta: 274.7MB). Free memory was 374.1MB in the beginning and 520.5MB in the end (delta: -146.4MB). Peak memory consumption was 469.2MB. Max. memory is 8.0GB. * TraceAbstraction took 46776.22ms. Allocated memory was 795.9MB in the beginning and 7.0GB in the end (delta: 6.2GB). Free memory was 520.0MB in the beginning and 5.3GB in the end (delta: -4.8GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 11094]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11094). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2318 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.7s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, AutomataDifference: 31.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65200 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65006 mSDsluCounter, 257753 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190509 mSDsCounter, 747 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16414 IncrementalHoareTripleChecker+Invalid, 17161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 747 mSolverCounterUnsat, 67244 mSDtfsCounter, 16414 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 975 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128860occurred in iteration=15, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 12733 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 2288 NumberOfCodeBlocks, 2288 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2268 ConstructedInterpolants, 0 QuantifiedInterpolants, 5025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2588 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 228/344 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown