/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/systemc/token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:08:14,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:08:14,721 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 23:08:14,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:08:14,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:08:14,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:08:14,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:08:14,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:08:14,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:08:14,738 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:08:14,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:08:14,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:08:14,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:08:14,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:08:14,740 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:08:14,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:08:14,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:08:14,747 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:08:14,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:08:14,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:08:14,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:08:14,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:08:14,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:08:14,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:08:14,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:08:14,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:08:14,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:08:14,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:08:14,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:08:14,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:08:14,751 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:08:14,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:08:14,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:08:14,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:08:14,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:08:14,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:08:14,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:08:14,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:08:14,953 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:08:14,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.14.cil.c [2023-12-15 23:08:15,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:08:16,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:08:16,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.14.cil.c [2023-12-15 23:08:16,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685b7941c/7fa3b43f07744653a43338fead3ac9df/FLAG77cb1e786 [2023-12-15 23:08:16,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685b7941c/7fa3b43f07744653a43338fead3ac9df [2023-12-15 23:08:16,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:08:16,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:08:16,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:08:16,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:08:16,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:08:16,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e66581a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16, skipping insertion in model container [2023-12-15 23:08:16,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:08:16,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.14.cil.c[669,682] [2023-12-15 23:08:16,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:08:16,458 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:08:16,465 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.14.cil.c[669,682] [2023-12-15 23:08:16,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:08:16,569 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:08:16,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16 WrapperNode [2023-12-15 23:08:16,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:08:16,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:08:16,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:08:16,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:08:16,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,624 INFO L138 Inliner]: procedures = 52, calls = 68, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 883 [2023-12-15 23:08:16,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:08:16,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:08:16,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:08:16,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:08:16,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,656 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 23:08:16,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:08:16,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:08:16,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:08:16,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:08:16,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (1/1) ... [2023-12-15 23:08:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:08:16,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:08:16,726 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 23:08:16,731 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 23:08:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:08:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 23:08:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 23:08:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 23:08:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 23:08:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 23:08:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 23:08:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 23:08:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 23:08:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 23:08:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 23:08:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 23:08:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 23:08:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 23:08:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 23:08:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:08:16,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:08:16,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:08:16,840 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:08:16,841 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:08:17,507 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:08:17,570 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:08:17,570 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-15 23:08:17,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:08:17 BoogieIcfgContainer [2023-12-15 23:08:17,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:08:17,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:08:17,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:08:17,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:08:17,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:08:16" (1/3) ... [2023-12-15 23:08:17,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605b2a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:08:17, skipping insertion in model container [2023-12-15 23:08:17,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:08:16" (2/3) ... [2023-12-15 23:08:17,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605b2a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:08:17, skipping insertion in model container [2023-12-15 23:08:17,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:08:17" (3/3) ... [2023-12-15 23:08:17,579 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.14.cil.c [2023-12-15 23:08:17,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:08:17,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:08:17,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:08:17,641 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;@11a5ed58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:08:17,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:08:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 317 states have (on average 1.7381703470031546) internal successors, (551), 321 states have internal predecessors, (551), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 23:08:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:17,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:17,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:17,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:17,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 505075948, now seen corresponding path program 1 times [2023-12-15 23:08:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:17,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664697336] [2023-12-15 23:08:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:18,170 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 23:08:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664697336] [2023-12-15 23:08:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664697336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:08:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826070065] [2023-12-15 23:08:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:08:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:08:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:08:18,201 INFO L87 Difference]: Start difference. First operand has 354 states, 317 states have (on average 1.7381703470031546) internal successors, (551), 321 states have internal predecessors, (551), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 23:08:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:19,885 INFO L93 Difference]: Finished difference Result 829 states and 1433 transitions. [2023-12-15 23:08:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:08:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:19,898 INFO L225 Difference]: With dead ends: 829 [2023-12-15 23:08:19,898 INFO L226 Difference]: Without dead ends: 481 [2023-12-15 23:08:19,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:08:19,905 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 985 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:19,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 642 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:08:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-15 23:08:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 351. [2023-12-15 23:08:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 316 states have (on average 1.6360759493670887) internal successors, (517), 318 states have internal predecessors, (517), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 23:08:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 571 transitions. [2023-12-15 23:08:19,957 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 571 transitions. Word has length 161 [2023-12-15 23:08:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:19,957 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 571 transitions. [2023-12-15 23:08:19,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 23:08:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 571 transitions. [2023-12-15 23:08:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:19,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:19,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:08:19,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:19,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1389257938, now seen corresponding path program 1 times [2023-12-15 23:08:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:19,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507384580] [2023-12-15 23:08:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:20,173 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 23:08:20,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:20,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507384580] [2023-12-15 23:08:20,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507384580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:20,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:20,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:08:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230116273] [2023-12-15 23:08:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:20,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:08:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:08:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:08:20,180 INFO L87 Difference]: Start difference. First operand 351 states and 571 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 23:08:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:21,683 INFO L93 Difference]: Finished difference Result 816 states and 1346 transitions. [2023-12-15 23:08:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:08:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:21,686 INFO L225 Difference]: With dead ends: 816 [2023-12-15 23:08:21,686 INFO L226 Difference]: Without dead ends: 481 [2023-12-15 23:08:21,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:08:21,688 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 974 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:21,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 637 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:08:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-15 23:08:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 351. [2023-12-15 23:08:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 316 states have (on average 1.6329113924050633) internal successors, (516), 318 states have internal predecessors, (516), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-15 23:08:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 570 transitions. [2023-12-15 23:08:21,712 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 570 transitions. Word has length 161 [2023-12-15 23:08:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:21,712 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 570 transitions. [2023-12-15 23:08:21,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 3 states have internal predecessors, (150), 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 23:08:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 570 transitions. [2023-12-15 23:08:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:21,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:21,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:21,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:08:21,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:21,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1727545488, now seen corresponding path program 1 times [2023-12-15 23:08:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:21,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344267580] [2023-12-15 23:08:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:21,957 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 23:08:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344267580] [2023-12-15 23:08:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344267580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:21,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:08:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433602148] [2023-12-15 23:08:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:08:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:08:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:08:21,959 INFO L87 Difference]: Start difference. First operand 351 states and 570 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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 23:08:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:24,461 INFO L93 Difference]: Finished difference Result 1296 states and 2152 transitions. [2023-12-15 23:08:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:08:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:24,466 INFO L225 Difference]: With dead ends: 1296 [2023-12-15 23:08:24,466 INFO L226 Difference]: Without dead ends: 963 [2023-12-15 23:08:24,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:08:24,467 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1488 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:24,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1077 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 23:08:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-12-15 23:08:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 702. [2023-12-15 23:08:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 639 states have (on average 1.6431924882629108) internal successors, (1050), 642 states have internal predecessors, (1050), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-15 23:08:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1149 transitions. [2023-12-15 23:08:24,500 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1149 transitions. Word has length 161 [2023-12-15 23:08:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:24,501 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1149 transitions. [2023-12-15 23:08:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 4 states have internal predecessors, (150), 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 23:08:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1149 transitions. [2023-12-15 23:08:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:24,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:24,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:24,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:08:24,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash 362053424, now seen corresponding path program 1 times [2023-12-15 23:08:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505592910] [2023-12-15 23:08:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:24,757 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 23:08:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505592910] [2023-12-15 23:08:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505592910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:24,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584944562] [2023-12-15 23:08:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:24,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:24,759 INFO L87 Difference]: Start difference. First operand 702 states and 1149 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:28,263 INFO L93 Difference]: Finished difference Result 2147 states and 3570 transitions. [2023-12-15 23:08:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:28,270 INFO L225 Difference]: With dead ends: 2147 [2023-12-15 23:08:28,270 INFO L226 Difference]: Without dead ends: 1463 [2023-12-15 23:08:28,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:28,280 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1523 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:28,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2053 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 23:08:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-12-15 23:08:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1026. [2023-12-15 23:08:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 935 states have (on average 1.6363636363636365) internal successors, (1530), 939 states have internal predecessors, (1530), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-15 23:08:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1673 transitions. [2023-12-15 23:08:28,342 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1673 transitions. Word has length 161 [2023-12-15 23:08:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:28,343 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1673 transitions. [2023-12-15 23:08:28,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1673 transitions. [2023-12-15 23:08:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:28,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:28,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:28,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:08:28,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:28,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 772663790, now seen corresponding path program 1 times [2023-12-15 23:08:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515545546] [2023-12-15 23:08:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:28,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:28,576 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 23:08:28,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515545546] [2023-12-15 23:08:28,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515545546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:28,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194625290] [2023-12-15 23:08:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:28,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:28,585 INFO L87 Difference]: Start difference. First operand 1026 states and 1673 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:31,626 INFO L93 Difference]: Finished difference Result 3394 states and 5634 transitions. [2023-12-15 23:08:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:31,637 INFO L225 Difference]: With dead ends: 3394 [2023-12-15 23:08:31,637 INFO L226 Difference]: Without dead ends: 2386 [2023-12-15 23:08:31,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:31,640 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1635 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:31,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 1330 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3094 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 23:08:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2023-12-15 23:08:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1675. [2023-12-15 23:08:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1528 states have (on average 1.6302356020942408) internal successors, (2491), 1534 states have internal predecessors, (2491), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-15 23:08:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2726 transitions. [2023-12-15 23:08:31,717 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2726 transitions. Word has length 161 [2023-12-15 23:08:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:31,717 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2726 transitions. [2023-12-15 23:08:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2726 transitions. [2023-12-15 23:08:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:31,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:31,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:08:31,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:31,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1015206032, now seen corresponding path program 1 times [2023-12-15 23:08:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482298051] [2023-12-15 23:08:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:08:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482298051] [2023-12-15 23:08:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482298051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332377498] [2023-12-15 23:08:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:31,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:31,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:31,911 INFO L87 Difference]: Start difference. First operand 1675 states and 2726 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:35,303 INFO L93 Difference]: Finished difference Result 5783 states and 9567 transitions. [2023-12-15 23:08:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:35,317 INFO L225 Difference]: With dead ends: 5783 [2023-12-15 23:08:35,317 INFO L226 Difference]: Without dead ends: 4126 [2023-12-15 23:08:35,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:35,321 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1521 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:35,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2051 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 23:08:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2023-12-15 23:08:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 2974. [2023-12-15 23:08:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2715 states have (on average 1.625414364640884) internal successors, (4413), 2725 states have internal predecessors, (4413), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-15 23:08:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4838 transitions. [2023-12-15 23:08:35,415 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4838 transitions. Word has length 161 [2023-12-15 23:08:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:35,416 INFO L495 AbstractCegarLoop]: Abstraction has 2974 states and 4838 transitions. [2023-12-15 23:08:35,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4838 transitions. [2023-12-15 23:08:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:35,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:35,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:35,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:08:35,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:35,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1143878062, now seen corresponding path program 1 times [2023-12-15 23:08:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531478010] [2023-12-15 23:08:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:35,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:35,681 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 23:08:35,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:35,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531478010] [2023-12-15 23:08:35,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531478010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:35,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:35,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729908257] [2023-12-15 23:08:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:35,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:35,683 INFO L87 Difference]: Start difference. First operand 2974 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:39,148 INFO L93 Difference]: Finished difference Result 10553 states and 17437 transitions. [2023-12-15 23:08:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:39,205 INFO L225 Difference]: With dead ends: 10553 [2023-12-15 23:08:39,206 INFO L226 Difference]: Without dead ends: 7597 [2023-12-15 23:08:39,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:39,213 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1517 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:39,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 2051 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 23:08:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2023-12-15 23:08:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 5586. [2023-12-15 23:08:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 5103 states have (on average 1.6227709190672153) internal successors, (8281), 5121 states have internal predecessors, (8281), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-15 23:08:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 9104 transitions. [2023-12-15 23:08:39,390 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 9104 transitions. Word has length 161 [2023-12-15 23:08:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 5586 states and 9104 transitions. [2023-12-15 23:08:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 9104 transitions. [2023-12-15 23:08:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:39,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:39,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:39,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:08:39,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:39,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1561766764, now seen corresponding path program 1 times [2023-12-15 23:08:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:39,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611106472] [2023-12-15 23:08:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:39,585 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 23:08:39,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:39,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611106472] [2023-12-15 23:08:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611106472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:39,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447358218] [2023-12-15 23:08:39,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:39,587 INFO L87 Difference]: Start difference. First operand 5586 states and 9104 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:42,977 INFO L93 Difference]: Finished difference Result 20111 states and 33269 transitions. [2023-12-15 23:08:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:43,055 INFO L225 Difference]: With dead ends: 20111 [2023-12-15 23:08:43,055 INFO L226 Difference]: Without dead ends: 14543 [2023-12-15 23:08:43,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:43,074 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1516 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3683 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:43,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2051 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3683 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:08:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14543 states. [2023-12-15 23:08:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14543 to 10823. [2023-12-15 23:08:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10823 states, 9892 states have (on average 1.6210068742418116) internal successors, (16035), 9926 states have internal predecessors, (16035), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-15 23:08:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10823 states to 10823 states and 17708 transitions. [2023-12-15 23:08:43,445 INFO L78 Accepts]: Start accepts. Automaton has 10823 states and 17708 transitions. Word has length 161 [2023-12-15 23:08:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:43,445 INFO L495 AbstractCegarLoop]: Abstraction has 10823 states and 17708 transitions. [2023-12-15 23:08:43,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10823 states and 17708 transitions. [2023-12-15 23:08:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:43,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:43,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:43,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:08:43,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:43,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1334246930, now seen corresponding path program 1 times [2023-12-15 23:08:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:43,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549855500] [2023-12-15 23:08:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:43,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:43,694 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 23:08:43,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549855500] [2023-12-15 23:08:43,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549855500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:43,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:43,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355354831] [2023-12-15 23:08:43,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:43,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:43,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:43,696 INFO L87 Difference]: Start difference. First operand 10823 states and 17708 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:47,261 INFO L93 Difference]: Finished difference Result 39226 states and 65123 transitions. [2023-12-15 23:08:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:47,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:47,350 INFO L225 Difference]: With dead ends: 39226 [2023-12-15 23:08:47,350 INFO L226 Difference]: Without dead ends: 28421 [2023-12-15 23:08:47,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:47,385 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1515 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:47,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 2051 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:08:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28421 states. [2023-12-15 23:08:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28421 to 21328. [2023-12-15 23:08:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21328 states, 19501 states have (on average 1.6198656479154916) internal successors, (31589), 19567 states have internal predecessors, (31589), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-15 23:08:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21328 states to 21328 states and 35124 transitions. [2023-12-15 23:08:48,205 INFO L78 Accepts]: Start accepts. Automaton has 21328 states and 35124 transitions. Word has length 161 [2023-12-15 23:08:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:48,205 INFO L495 AbstractCegarLoop]: Abstraction has 21328 states and 35124 transitions. [2023-12-15 23:08:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 21328 states and 35124 transitions. [2023-12-15 23:08:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:48,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:48,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:08:48,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:48,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1343279916, now seen corresponding path program 1 times [2023-12-15 23:08:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:48,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261582843] [2023-12-15 23:08:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:48,432 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 23:08:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:48,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261582843] [2023-12-15 23:08:48,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261582843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:48,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167972045] [2023-12-15 23:08:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:48,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:48,434 INFO L87 Difference]: Start difference. First operand 21328 states and 35124 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:08:52,507 INFO L93 Difference]: Finished difference Result 77457 states and 129433 transitions. [2023-12-15 23:08:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:08:52,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:08:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:08:52,694 INFO L225 Difference]: With dead ends: 77457 [2023-12-15 23:08:52,694 INFO L226 Difference]: Without dead ends: 56147 [2023-12-15 23:08:52,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:08:52,745 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1514 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:08:52,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2051 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 23:08:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56147 states. [2023-12-15 23:08:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56147 to 42401. [2023-12-15 23:08:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42401 states, 38782 states have (on average 1.6190758599350215) internal successors, (62791), 38912 states have internal predecessors, (62791), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-12-15 23:08:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42401 states to 42401 states and 70536 transitions. [2023-12-15 23:08:54,558 INFO L78 Accepts]: Start accepts. Automaton has 42401 states and 70536 transitions. Word has length 161 [2023-12-15 23:08:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:08:54,558 INFO L495 AbstractCegarLoop]: Abstraction has 42401 states and 70536 transitions. [2023-12-15 23:08:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:08:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 42401 states and 70536 transitions. [2023-12-15 23:08:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:08:54,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:08:54,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:54,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:08:54,579 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:08:54,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:08:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1706746414, now seen corresponding path program 1 times [2023-12-15 23:08:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:08:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595996385] [2023-12-15 23:08:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:08:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:08:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:08:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:08:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:08:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:08:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:08:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:08:54,762 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 23:08:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:08:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595996385] [2023-12-15 23:08:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595996385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:08:54,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:08:54,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:08:54,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720354035] [2023-12-15 23:08:54,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:08:54,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:08:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:08:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:08:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:08:54,763 INFO L87 Difference]: Start difference. First operand 42401 states and 70536 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:09:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:09:00,075 INFO L93 Difference]: Finished difference Result 153920 states and 259903 transitions. [2023-12-15 23:09:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:09:00,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:09:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:09:00,732 INFO L225 Difference]: With dead ends: 153920 [2023-12-15 23:09:00,732 INFO L226 Difference]: Without dead ends: 111537 [2023-12-15 23:09:00,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:09:00,845 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1513 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:09:00,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2051 Invalid, 3711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:09:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111537 states. [2023-12-15 23:09:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111537 to 84674. [2023-12-15 23:09:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84674 states, 77471 states have (on average 1.6184765912405932) internal successors, (125385), 77729 states have internal predecessors, (125385), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2023-12-15 23:09:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84674 states to 84674 states and 143008 transitions. [2023-12-15 23:09:04,187 INFO L78 Accepts]: Start accepts. Automaton has 84674 states and 143008 transitions. Word has length 161 [2023-12-15 23:09:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:09:04,187 INFO L495 AbstractCegarLoop]: Abstraction has 84674 states and 143008 transitions. [2023-12-15 23:09:04,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:09:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 84674 states and 143008 transitions. [2023-12-15 23:09:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-15 23:09:04,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:09:04,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:09:04,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:09:04,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:09:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1995565804, now seen corresponding path program 1 times [2023-12-15 23:09:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:09:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880388460] [2023-12-15 23:09:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:09:04,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:09:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:09:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 23:09:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 23:09:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-15 23:09:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 23:09:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:09:04,413 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 23:09:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:09:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880388460] [2023-12-15 23:09:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880388460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:09:04,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:09:04,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:09:04,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854747239] [2023-12-15 23:09:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:09:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:09:04,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:09:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:09:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:09:04,415 INFO L87 Difference]: Start difference. First operand 84674 states and 143008 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 23:09:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:09:11,846 INFO L93 Difference]: Finished difference Result 306847 states and 526485 transitions. [2023-12-15 23:09:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:09:11,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 5 states have internal predecessors, (150), 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 161 [2023-12-15 23:09:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:09:12,848 INFO L225 Difference]: With dead ends: 306847 [2023-12-15 23:09:12,848 INFO L226 Difference]: Without dead ends: 222191 [2023-12-15 23:09:13,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:09:13,071 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1614 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 3027 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:09:13,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1330 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3027 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:09:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222191 states. Received shutdown request... [2023-12-15 23:09:14,462 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:09:14,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:09:14,462 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:09:14,466 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:09:14,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:09:14,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:09:14 BoogieIcfgContainer [2023-12-15 23:09:14,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:09:14,470 INFO L158 Benchmark]: Toolchain (without parser) took 58275.14ms. Allocated memory was 213.9MB in the beginning and 5.4GB in the end (delta: 5.2GB). Free memory was 165.6MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 23:09:14,470 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory was 160.9MB in the beginning and 160.8MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:09:14,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.17ms. Allocated memory is still 213.9MB. Free memory was 165.6MB in the beginning and 141.7MB in the end (delta: 23.9MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 23:09:14,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.00ms. Allocated memory is still 213.9MB. Free memory was 141.7MB in the beginning and 137.6MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:09:14,472 INFO L158 Benchmark]: Boogie Preprocessor took 66.71ms. Allocated memory is still 213.9MB. Free memory was 137.6MB in the beginning and 132.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 23:09:14,472 INFO L158 Benchmark]: RCFGBuilder took 878.38ms. Allocated memory was 213.9MB in the beginning and 305.1MB in the end (delta: 91.2MB). Free memory was 132.4MB in the beginning and 223.6MB in the end (delta: -91.3MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2023-12-15 23:09:14,472 INFO L158 Benchmark]: TraceAbstraction took 56896.87ms. Allocated memory was 305.1MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 222.6MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 23:09:14,476 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-15 23:09:14,477 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 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory was 160.9MB in the beginning and 160.8MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 372.17ms. Allocated memory is still 213.9MB. Free memory was 165.6MB in the beginning and 141.7MB in the end (delta: 23.9MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.00ms. Allocated memory is still 213.9MB. Free memory was 141.7MB in the beginning and 137.6MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.71ms. Allocated memory is still 213.9MB. Free memory was 137.6MB in the beginning and 132.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 878.38ms. Allocated memory was 213.9MB in the beginning and 305.1MB in the end (delta: 91.2MB). Free memory was 132.4MB in the beginning and 223.6MB in the end (delta: -91.3MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * TraceAbstraction took 56896.87ms. Allocated memory was 305.1MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 222.6MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 1.4GB. 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: 20]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 20). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 354 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17553 SdHoareTripleChecker+Valid, 26.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17315 mSDsluCounter, 19375 SdHoareTripleChecker+Invalid, 22.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14616 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36344 IncrementalHoareTripleChecker+Invalid, 37261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 4759 mSDtfsCounter, 36344 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84674occurred in iteration=11, 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: 8.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 56254 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1932 NumberOfCodeBlocks, 1932 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1920 ConstructedInterpolants, 0 QuantifiedInterpolants, 5631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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