/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:26:51,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:26:51,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:26:51,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:26:51,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:26:51,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:26:51,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:26:51,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:26:51,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:26:51,640 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:26:51,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:26:51,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:26:51,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:26:51,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:26:51,641 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:26:51,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:26:51,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:26:51,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:26:51,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:26:51,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:26:51,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:26:51,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:26:51,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:26:51,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:26:51,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:26:51,644 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:26:51,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:26:51,644 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:26:51,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:26:51,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:26:51,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:26:51,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:26:51,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:51,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:26:51,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:26:51,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:26:51,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:26:51,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:26:51,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:26:51,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:26:51,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:26:51,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:26:51,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:26:51,653 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:26:51,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:26:51,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:26:51,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:26:51,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:26:51,888 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:26:51,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c [2023-12-20 11:26:52,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:26:53,355 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:26:53,356 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c [2023-12-20 11:26:53,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6e32a57/894c42cffba8430cb3f248ae5a7bafa8/FLAG471d8c879 [2023-12-20 11:26:53,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6e32a57/894c42cffba8430cb3f248ae5a7bafa8 [2023-12-20 11:26:53,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:26:53,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:26:53,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:53,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:26:53,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:26:53,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:53" (1/1) ... [2023-12-20 11:26:53,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6e18ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:53, skipping insertion in model container [2023-12-20 11:26:53,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:26:53" (1/1) ... [2023-12-20 11:26:53,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:26:54,834 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c[381679,381692] [2023-12-20 11:26:54,852 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c[383339,383352] [2023-12-20 11:26:55,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:55,113 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:26:55,763 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c[381679,381692] [2023-12-20 11:26:55,768 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.14.cil.c[383339,383352] [2023-12-20 11:26:55,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:26:55,890 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:26:55,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55 WrapperNode [2023-12-20 11:26:55,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:26:55,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:55,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:26:55,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:26:55,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:55,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,189 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13237 [2023-12-20 11:26:56,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:26:56,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:26:56,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:26:56,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:26:56,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,401 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]. [2023-12-20 11:26:56,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:26:56,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:26:56,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:26:56,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:26:56,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (1/1) ... [2023-12-20 11:26:56,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:26:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:26:56,935 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) [2023-12-20 11:26:56,949 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 [2023-12-20 11:26:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:26:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:26:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:26:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:26:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:26:56,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:26:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:26:57,079 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:26:57,081 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:27:02,562 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:27:02,630 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:27:02,630 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-20 11:27:02,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:27:02 BoogieIcfgContainer [2023-12-20 11:27:02,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:27:02,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:27:02,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:27:02,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:27:02,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:26:53" (1/3) ... [2023-12-20 11:27:02,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ba113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:27:02, skipping insertion in model container [2023-12-20 11:27:02,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:26:55" (2/3) ... [2023-12-20 11:27:02,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ba113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:27:02, skipping insertion in model container [2023-12-20 11:27:02,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:27:02" (3/3) ... [2023-12-20 11:27:02,636 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.14.cil.c [2023-12-20 11:27:02,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:27:02,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:27:02,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:27:02,707 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;@1e953dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:27:02,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:27:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 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) [2023-12-20 11:27:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:02,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:02,730 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, 1] [2023-12-20 11:27:02,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:02,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -282034047, now seen corresponding path program 1 times [2023-12-20 11:27:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848880241] [2023-12-20 11:27:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848880241] [2023-12-20 11:27:03,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848880241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:03,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:03,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:27:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544023628] [2023-12-20 11:27:03,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:27:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:27:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:27:03,334 INFO L87 Difference]: Start difference. First operand has 2477 states, 2439 states have (on average 1.8757687576875768) internal successors, (4575), 2444 states have internal predecessors, (4575), 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 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-20 11:27:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:04,992 INFO L93 Difference]: Finished difference Result 5079 states and 9486 transitions. [2023-12-20 11:27:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:27:04,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:05,013 INFO L225 Difference]: With dead ends: 5079 [2023-12-20 11:27:05,013 INFO L226 Difference]: Without dead ends: 2602 [2023-12-20 11:27:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:27:05,023 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 989 mSDsluCounter, 12214 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 16478 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 16478 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:27:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-12-20 11:27:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2472. [2023-12-20 11:27:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2436 states have (on average 1.8370279146141215) internal successors, (4475), 2439 states have internal predecessors, (4475), 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) [2023-12-20 11:27:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 4529 transitions. [2023-12-20 11:27:05,149 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 4529 transitions. Word has length 162 [2023-12-20 11:27:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:05,149 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 4529 transitions. [2023-12-20 11:27:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-20 11:27:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 4529 transitions. [2023-12-20 11:27:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:05,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:05,161 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, 1] [2023-12-20 11:27:05,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:27:05,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:05,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1487437567, now seen corresponding path program 1 times [2023-12-20 11:27:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:05,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783506153] [2023-12-20 11:27:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:05,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:05,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783506153] [2023-12-20 11:27:05,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783506153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:05,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:05,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899532894] [2023-12-20 11:27:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:05,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:05,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:05,433 INFO L87 Difference]: Start difference. First operand 2472 states and 4529 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:07,923 INFO L93 Difference]: Finished difference Result 2982 states and 5392 transitions. [2023-12-20 11:27:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:27:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:07,934 INFO L225 Difference]: With dead ends: 2982 [2023-12-20 11:27:07,934 INFO L226 Difference]: Without dead ends: 2644 [2023-12-20 11:27:07,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 11:27:07,937 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 1149 mSDsluCounter, 20635 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 24895 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:07,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 24895 Invalid, 2156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:27:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-20 11:27:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2474. [2023-12-20 11:27:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2438 states have (on average 1.8359310910582445) internal successors, (4476), 2441 states have internal predecessors, (4476), 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) [2023-12-20 11:27:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4530 transitions. [2023-12-20 11:27:07,996 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4530 transitions. Word has length 162 [2023-12-20 11:27:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:07,997 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 4530 transitions. [2023-12-20 11:27:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4530 transitions. [2023-12-20 11:27:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:08,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:08,000 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, 1] [2023-12-20 11:27:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:27:08,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:08,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash 395345595, now seen corresponding path program 1 times [2023-12-20 11:27:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257603045] [2023-12-20 11:27:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257603045] [2023-12-20 11:27:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257603045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:08,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:08,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:27:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142550052] [2023-12-20 11:27:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:27:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:27:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:27:08,271 INFO L87 Difference]: Start difference. First operand 2474 states and 4530 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-20 11:27:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:10,869 INFO L93 Difference]: Finished difference Result 3427 states and 6120 transitions. [2023-12-20 11:27:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:27:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:10,882 INFO L225 Difference]: With dead ends: 3427 [2023-12-20 11:27:10,882 INFO L226 Difference]: Without dead ends: 3092 [2023-12-20 11:27:10,900 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 [2023-12-20 11:27:10,902 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 5445 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:10,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 16905 Invalid, 2418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 11:27:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2023-12-20 11:27:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2827. [2023-12-20 11:27:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2763 states have (on average 1.8139703221136445) internal successors, (5012), 2767 states have internal predecessors, (5012), 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) [2023-12-20 11:27:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 5111 transitions. [2023-12-20 11:27:10,990 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 5111 transitions. Word has length 162 [2023-12-20 11:27:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:10,990 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 5111 transitions. [2023-12-20 11:27:10,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-20 11:27:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 5111 transitions. [2023-12-20 11:27:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:10,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:10,992 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, 1] [2023-12-20 11:27:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:27:10,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:10,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1810022789, now seen corresponding path program 1 times [2023-12-20 11:27:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:10,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351238915] [2023-12-20 11:27:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351238915] [2023-12-20 11:27:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351238915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:11,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:11,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:11,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576946365] [2023-12-20 11:27:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:11,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:11,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:11,268 INFO L87 Difference]: Start difference. First operand 2827 states and 5111 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:15,066 INFO L93 Difference]: Finished difference Result 4284 states and 7544 transitions. [2023-12-20 11:27:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:15,083 INFO L225 Difference]: With dead ends: 4284 [2023-12-20 11:27:15,084 INFO L226 Difference]: Without dead ends: 3596 [2023-12-20 11:27:15,088 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 [2023-12-20 11:27:15,095 INFO L413 NwaCegarLoop]: 4433 mSDtfsCounter, 5480 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 21838 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:15,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5499 Valid, 21838 Invalid, 3805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:27:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2023-12-20 11:27:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3153. [2023-12-20 11:27:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 3061 states have (on average 1.7948382881411304) internal successors, (5494), 3066 states have internal predecessors, (5494), 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) [2023-12-20 11:27:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5637 transitions. [2023-12-20 11:27:15,209 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5637 transitions. Word has length 162 [2023-12-20 11:27:15,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:15,209 INFO L495 AbstractCegarLoop]: Abstraction has 3153 states and 5637 transitions. [2023-12-20 11:27:15,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5637 transitions. [2023-12-20 11:27:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:15,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:15,211 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, 1] [2023-12-20 11:27:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:27:15,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:15,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1399412423, now seen corresponding path program 1 times [2023-12-20 11:27:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475581585] [2023-12-20 11:27:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:15,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475581585] [2023-12-20 11:27:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475581585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:15,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242112099] [2023-12-20 11:27:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:15,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:15,487 INFO L87 Difference]: Start difference. First operand 3153 states and 5637 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:18,698 INFO L93 Difference]: Finished difference Result 5541 states and 9618 transitions. [2023-12-20 11:27:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:18,714 INFO L225 Difference]: With dead ends: 5541 [2023-12-20 11:27:18,715 INFO L226 Difference]: Without dead ends: 4527 [2023-12-20 11:27:18,718 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 [2023-12-20 11:27:18,719 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5592 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5611 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:18,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5611 Valid, 21115 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 11:27:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2023-12-20 11:27:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 3806. [2023-12-20 11:27:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7657189721159103) internal successors, (6459), 3665 states have internal predecessors, (6459), 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) [2023-12-20 11:27:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6694 transitions. [2023-12-20 11:27:18,822 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6694 transitions. Word has length 162 [2023-12-20 11:27:18,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:18,823 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6694 transitions. [2023-12-20 11:27:18,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6694 transitions. [2023-12-20 11:27:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:18,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:18,825 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, 1] [2023-12-20 11:27:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:27:18,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:18,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1107685051, now seen corresponding path program 1 times [2023-12-20 11:27:18,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:18,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753544889] [2023-12-20 11:27:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:19,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:19,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753544889] [2023-12-20 11:27:19,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753544889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:19,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:19,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833535719] [2023-12-20 11:27:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:19,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:19,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:19,043 INFO L87 Difference]: Start difference. First operand 3806 states and 6694 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:20,627 INFO L93 Difference]: Finished difference Result 6182 states and 10666 transitions. [2023-12-20 11:27:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:20,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:20,642 INFO L225 Difference]: With dead ends: 6182 [2023-12-20 11:27:20,642 INFO L226 Difference]: Without dead ends: 4515 [2023-12-20 11:27:20,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:20,648 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5203 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:20,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 16712 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 11:27:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-12-20 11:27:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 3806. [2023-12-20 11:27:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7643521049753963) internal successors, (6454), 3665 states have internal predecessors, (6454), 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) [2023-12-20 11:27:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6689 transitions. [2023-12-20 11:27:20,735 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6689 transitions. Word has length 162 [2023-12-20 11:27:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:20,735 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6689 transitions. [2023-12-20 11:27:20,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6689 transitions. [2023-12-20 11:27:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:20,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:20,737 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, 1] [2023-12-20 11:27:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:27:20,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:20,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1028198151, now seen corresponding path program 1 times [2023-12-20 11:27:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414247987] [2023-12-20 11:27:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:20,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414247987] [2023-12-20 11:27:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414247987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938836243] [2023-12-20 11:27:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:20,920 INFO L87 Difference]: Start difference. First operand 3806 states and 6689 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:22,429 INFO L93 Difference]: Finished difference Result 6171 states and 10630 transitions. [2023-12-20 11:27:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:22,444 INFO L225 Difference]: With dead ends: 6171 [2023-12-20 11:27:22,444 INFO L226 Difference]: Without dead ends: 4504 [2023-12-20 11:27:22,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:22,450 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5199 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5219 SdHoareTripleChecker+Valid, 16712 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:22,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5219 Valid, 16712 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 11:27:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2023-12-20 11:27:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3806. [2023-12-20 11:27:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3658 states have (on average 1.7629852378348825) internal successors, (6449), 3665 states have internal predecessors, (6449), 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) [2023-12-20 11:27:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 6684 transitions. [2023-12-20 11:27:22,557 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 6684 transitions. Word has length 162 [2023-12-20 11:27:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:22,558 INFO L495 AbstractCegarLoop]: Abstraction has 3806 states and 6684 transitions. [2023-12-20 11:27:22,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 6684 transitions. [2023-12-20 11:27:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:22,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:22,560 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, 1] [2023-12-20 11:27:22,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:27:22,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:22,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash -610309449, now seen corresponding path program 1 times [2023-12-20 11:27:22,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585662500] [2023-12-20 11:27:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585662500] [2023-12-20 11:27:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585662500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:22,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:22,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639578688] [2023-12-20 11:27:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:22,791 INFO L87 Difference]: Start difference. First operand 3806 states and 6684 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:26,344 INFO L93 Difference]: Finished difference Result 7933 states and 13493 transitions. [2023-12-20 11:27:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:26,361 INFO L225 Difference]: With dead ends: 7933 [2023-12-20 11:27:26,361 INFO L226 Difference]: Without dead ends: 6266 [2023-12-20 11:27:26,367 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 [2023-12-20 11:27:26,368 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5463 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5482 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5482 Valid, 21836 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:27:26,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2023-12-20 11:27:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5127. [2023-12-20 11:27:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.724265461269776) internal successors, (8392), 4878 states have internal predecessors, (8392), 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) [2023-12-20 11:27:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8817 transitions. [2023-12-20 11:27:26,505 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8817 transitions. Word has length 162 [2023-12-20 11:27:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:26,505 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8817 transitions. [2023-12-20 11:27:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8817 transitions. [2023-12-20 11:27:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:26,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:26,508 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, 1] [2023-12-20 11:27:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:27:26,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 788644153, now seen corresponding path program 1 times [2023-12-20 11:27:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233291328] [2023-12-20 11:27:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:26,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:26,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233291328] [2023-12-20 11:27:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233291328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:26,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:26,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701857368] [2023-12-20 11:27:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:26,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:26,721 INFO L87 Difference]: Start difference. First operand 5127 states and 8817 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:28,500 INFO L93 Difference]: Finished difference Result 9277 states and 15699 transitions. [2023-12-20 11:27:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:28,514 INFO L225 Difference]: With dead ends: 9277 [2023-12-20 11:27:28,515 INFO L226 Difference]: Without dead ends: 6289 [2023-12-20 11:27:28,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:28,523 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5045 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 20836 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:27:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2023-12-20 11:27:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5127. [2023-12-20 11:27:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4867 states have (on average 1.7224162728580235) internal successors, (8383), 4878 states have internal predecessors, (8383), 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) [2023-12-20 11:27:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 8808 transitions. [2023-12-20 11:27:28,660 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 8808 transitions. Word has length 162 [2023-12-20 11:27:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:28,660 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 8808 transitions. [2023-12-20 11:27:28,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 8808 transitions. [2023-12-20 11:27:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:28,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:28,663 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, 1] [2023-12-20 11:27:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:27:28,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:28,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -828796297, now seen corresponding path program 1 times [2023-12-20 11:27:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616362693] [2023-12-20 11:27:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:28,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616362693] [2023-12-20 11:27:28,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616362693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:28,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:28,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117377825] [2023-12-20 11:27:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:28,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:28,853 INFO L87 Difference]: Start difference. First operand 5127 states and 8808 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:32,465 INFO L93 Difference]: Finished difference Result 12744 states and 21314 transitions. [2023-12-20 11:27:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:32,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:32,492 INFO L225 Difference]: With dead ends: 12744 [2023-12-20 11:27:32,492 INFO L226 Difference]: Without dead ends: 9756 [2023-12-20 11:27:32,502 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 [2023-12-20 11:27:32,503 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5455 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3623 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:32,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5474 Valid, 21836 Invalid, 3690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3623 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:27:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2023-12-20 11:27:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 7779. [2023-12-20 11:27:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7779 states, 7295 states have (on average 1.6818368745716243) internal successors, (12269), 7314 states have internal predecessors, (12269), 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) [2023-12-20 11:27:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 13092 transitions. [2023-12-20 11:27:32,763 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 13092 transitions. Word has length 162 [2023-12-20 11:27:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:32,764 INFO L495 AbstractCegarLoop]: Abstraction has 7779 states and 13092 transitions. [2023-12-20 11:27:32,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 13092 transitions. [2023-12-20 11:27:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:32,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:32,768 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, 1] [2023-12-20 11:27:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:27:32,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:32,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash -465329799, now seen corresponding path program 1 times [2023-12-20 11:27:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:32,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814153817] [2023-12-20 11:27:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:32,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814153817] [2023-12-20 11:27:32,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814153817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:32,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:32,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297919252] [2023-12-20 11:27:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:32,996 INFO L87 Difference]: Start difference. First operand 7779 states and 13092 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:36,759 INFO L93 Difference]: Finished difference Result 22382 states and 37088 transitions. [2023-12-20 11:27:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:36,823 INFO L225 Difference]: With dead ends: 22382 [2023-12-20 11:27:36,824 INFO L226 Difference]: Without dead ends: 16742 [2023-12-20 11:27:36,849 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 [2023-12-20 11:27:36,850 INFO L413 NwaCegarLoop]: 4431 mSDtfsCounter, 5454 mSDsluCounter, 17405 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 21836 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 21836 Invalid, 3677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 11:27:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16742 states. [2023-12-20 11:27:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16742 to 13096. [2023-12-20 11:27:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13096 states, 12164 states have (on average 1.6490463663268662) internal successors, (20059), 12199 states have internal predecessors, (20059), 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) [2023-12-20 11:27:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13096 states to 13096 states and 21732 transitions. [2023-12-20 11:27:37,400 INFO L78 Accepts]: Start accepts. Automaton has 13096 states and 21732 transitions. Word has length 162 [2023-12-20 11:27:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:37,401 INFO L495 AbstractCegarLoop]: Abstraction has 13096 states and 21732 transitions. [2023-12-20 11:27:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 13096 states and 21732 transitions. [2023-12-20 11:27:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:37,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:37,411 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, 1] [2023-12-20 11:27:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:27:37,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:37,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash -176510409, now seen corresponding path program 1 times [2023-12-20 11:27:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:37,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895054071] [2023-12-20 11:27:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:37,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895054071] [2023-12-20 11:27:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895054071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:37,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:37,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281025533] [2023-12-20 11:27:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:37,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:37,806 INFO L87 Difference]: Start difference. First operand 13096 states and 21732 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:41,433 INFO L93 Difference]: Finished difference Result 41657 states and 68826 transitions. [2023-12-20 11:27:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:27:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:41,532 INFO L225 Difference]: With dead ends: 41657 [2023-12-20 11:27:41,532 INFO L226 Difference]: Without dead ends: 30700 [2023-12-20 11:27:41,572 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 [2023-12-20 11:27:41,573 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 5553 mSDsluCounter, 16878 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 21115 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 11:27:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30700 states. [2023-12-20 11:27:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30700 to 23761. [2023-12-20 11:27:42,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6270004103405826) internal successors, (35685), 22000 states have internal predecessors, (35685), 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) [2023-12-20 11:27:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39220 transitions. [2023-12-20 11:27:42,486 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39220 transitions. Word has length 162 [2023-12-20 11:27:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:42,487 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39220 transitions. [2023-12-20 11:27:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39220 transitions. [2023-12-20 11:27:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:42,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:42,499 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, 1] [2023-12-20 11:27:42,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:27:42,500 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:42,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -721382983, now seen corresponding path program 1 times [2023-12-20 11:27:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:42,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890268764] [2023-12-20 11:27:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:42,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890268764] [2023-12-20 11:27:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890268764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:42,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237982634] [2023-12-20 11:27:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:42,687 INFO L87 Difference]: Start difference. First operand 23761 states and 39220 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:45,038 INFO L93 Difference]: Finished difference Result 52753 states and 87822 transitions. [2023-12-20 11:27:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:27:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:45,135 INFO L225 Difference]: With dead ends: 52753 [2023-12-20 11:27:45,135 INFO L226 Difference]: Without dead ends: 31131 [2023-12-20 11:27:45,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:27:45,184 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 5051 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5071 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:45,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5071 Valid, 20836 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:27:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2023-12-20 11:27:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 23761. [2023-12-20 11:27:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 21933 states have (on average 1.6240368394656455) internal successors, (35620), 22000 states have internal predecessors, (35620), 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) [2023-12-20 11:27:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 39155 transitions. [2023-12-20 11:27:46,064 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 39155 transitions. Word has length 162 [2023-12-20 11:27:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:46,065 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 39155 transitions. [2023-12-20 11:27:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 39155 transitions. [2023-12-20 11:27:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:46,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:46,077 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, 1] [2023-12-20 11:27:46,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:27:46,077 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:46,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash -46222857, now seen corresponding path program 1 times [2023-12-20 11:27:46,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:46,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238621511] [2023-12-20 11:27:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238621511] [2023-12-20 11:27:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238621511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:46,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:46,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346096771] [2023-12-20 11:27:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:46,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:46,270 INFO L87 Difference]: Start difference. First operand 23761 states and 39155 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:51,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:51,004 INFO L93 Difference]: Finished difference Result 90060 states and 148382 transitions. [2023-12-20 11:27:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:51,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:27:51,317 INFO L225 Difference]: With dead ends: 90060 [2023-12-20 11:27:51,317 INFO L226 Difference]: Without dead ends: 68438 [2023-12-20 11:27:51,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:27:51,364 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5881 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:27:51,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5913 Valid, 21829 Invalid, 3600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 11:27:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68438 states. [2023-12-20 11:27:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68438 to 45156. [2023-12-20 11:27:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45156 states, 41600 states have (on average 1.6113942307692308) internal successors, (67034), 41731 states have internal predecessors, (67034), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2023-12-20 11:27:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45156 states to 45156 states and 74651 transitions. [2023-12-20 11:27:53,366 INFO L78 Accepts]: Start accepts. Automaton has 45156 states and 74651 transitions. Word has length 162 [2023-12-20 11:27:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:27:53,367 INFO L495 AbstractCegarLoop]: Abstraction has 45156 states and 74651 transitions. [2023-12-20 11:27:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 45156 states and 74651 transitions. [2023-12-20 11:27:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:27:53,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:27:53,387 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, 1] [2023-12-20 11:27:53,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:27:53,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:27:53,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:27:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash -630994507, now seen corresponding path program 1 times [2023-12-20 11:27:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:27:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492987413] [2023-12-20 11:27:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:27:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:27:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:27:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:27:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:27:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:27:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:27:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:27:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:27:53,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:27:53,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492987413] [2023-12-20 11:27:53,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492987413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:27:53,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:27:53,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:27:53,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774726791] [2023-12-20 11:27:53,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:27:53,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:27:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:27:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:27:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:27:53,575 INFO L87 Difference]: Start difference. First operand 45156 states and 74651 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:27:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:27:59,708 INFO L93 Difference]: Finished difference Result 175357 states and 291192 transitions. [2023-12-20 11:27:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:27:59,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:27:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:00,327 INFO L225 Difference]: With dead ends: 175357 [2023-12-20 11:28:00,327 INFO L226 Difference]: Without dead ends: 132340 [2023-12-20 11:28:00,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:00,543 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 5546 mSDsluCounter, 17397 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 21825 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:00,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5564 Valid, 21825 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 11:28:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132340 states. [2023-12-20 11:28:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132340 to 86917. [2023-12-20 11:28:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86917 states, 79969 states have (on average 1.6029711513211369) internal successors, (128188), 80228 states have internal predecessors, (128188), 5148 states have call successors, (5148), 1543 states have call predecessors, (5148), 1798 states have return successors, (11963), 5401 states have call predecessors, (11963), 5146 states have call successors, (11963) [2023-12-20 11:28:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86917 states to 86917 states and 145299 transitions. [2023-12-20 11:28:04,715 INFO L78 Accepts]: Start accepts. Automaton has 86917 states and 145299 transitions. Word has length 162 [2023-12-20 11:28:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:28:04,715 INFO L495 AbstractCegarLoop]: Abstraction has 86917 states and 145299 transitions. [2023-12-20 11:28:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:28:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 86917 states and 145299 transitions. [2023-12-20 11:28:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:28:04,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:28:04,757 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, 1] [2023-12-20 11:28:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:28:04,757 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:28:04,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:28:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1065500105, now seen corresponding path program 1 times [2023-12-20 11:28:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:28:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040598562] [2023-12-20 11:28:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:28:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:28:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:28:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:28:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:28:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:28:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:28:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:28:05,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:28:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040598562] [2023-12-20 11:28:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040598562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:28:05,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:28:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:28:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646357876] [2023-12-20 11:28:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:28:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:28:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:28:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:28:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:28:05,093 INFO L87 Difference]: Start difference. First operand 86917 states and 145299 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:28:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:28:14,229 INFO L93 Difference]: Finished difference Result 341084 states and 573934 transitions. [2023-12-20 11:28:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:28:14,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:28:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:15,241 INFO L225 Difference]: With dead ends: 341084 [2023-12-20 11:28:15,241 INFO L226 Difference]: Without dead ends: 256306 [2023-12-20 11:28:15,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:15,433 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5809 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5841 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:15,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5841 Valid, 21829 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 11:28:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256306 states. [2023-12-20 11:28:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256306 to 171462. [2023-12-20 11:28:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171462 states, 157858 states have (on average 1.5998048879372602) internal successors, (252542), 158373 states have internal predecessors, (252542), 10012 states have call successors, (10012), 3079 states have call predecessors, (10012), 3590 states have return successors, (30205), 10521 states have call predecessors, (30205), 10010 states have call successors, (30205) [2023-12-20 11:28:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171462 states to 171462 states and 292759 transitions. [2023-12-20 11:28:23,580 INFO L78 Accepts]: Start accepts. Automaton has 171462 states and 292759 transitions. Word has length 162 [2023-12-20 11:28:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:28:23,580 INFO L495 AbstractCegarLoop]: Abstraction has 171462 states and 292759 transitions. [2023-12-20 11:28:23,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:28:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 171462 states and 292759 transitions. [2023-12-20 11:28:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 11:28:23,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:28:23,653 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, 1] [2023-12-20 11:28:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 11:28:23,653 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:28:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:28:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1495158411, now seen corresponding path program 1 times [2023-12-20 11:28:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:28:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23737839] [2023-12-20 11:28:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:28:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:28:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:28:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 11:28:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 11:28:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 11:28:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 11:28:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:28:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:28:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:28:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23737839] [2023-12-20 11:28:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23737839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:28:23,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:28:23,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:28:23,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308097317] [2023-12-20 11:28:23,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:28:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:28:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:28:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:28:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:28:23,867 INFO L87 Difference]: Start difference. First operand 171462 states and 292759 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-20 11:28:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:28:38,628 INFO L93 Difference]: Finished difference Result 671515 states and 1155380 transitions. [2023-12-20 11:28:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:28:38,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-20 11:28:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:28:40,901 INFO L225 Difference]: With dead ends: 671515 [2023-12-20 11:28:40,902 INFO L226 Difference]: Without dead ends: 502192 [2023-12-20 11:28:41,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:28:41,621 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5773 mSDsluCounter, 17400 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5805 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:28:41,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5805 Valid, 21829 Invalid, 3561 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [70 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 11:28:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502192 states.