/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/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:56:44,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:56:44,591 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 14:56:44,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:56:44,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:56:44,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:56:44,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:56:44,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:56:44,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:56:44,621 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:56:44,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:56:44,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:56:44,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:56:44,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:56:44,622 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:56:44,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:56:44,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:56:44,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:56:44,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:56:44,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:56:44,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:56:44,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:56:44,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:56:44,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:56:44,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:56:44,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:56:44,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:56:44,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:56:44,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:56:44,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:56:44,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:56:44,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:56:44,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:56:44,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:56:44,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:56:44,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:56:44,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:56:44,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:56:44,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:56:44,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:56:44,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:56:44,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:56:44,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:56:44,851 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:56:44,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2023-12-20 14:56:45,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:56:46,008 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:56:46,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c [2023-12-20 14:56:46,014 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7639dd5c6/0a71f3aa4f984d1cab3f1eced88cd7de/FLAGbc97d5dda [2023-12-20 14:56:46,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7639dd5c6/0a71f3aa4f984d1cab3f1eced88cd7de [2023-12-20 14:56:46,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:56:46,029 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:56:46,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:56:46,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:56:46,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:56:46,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1540b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46, skipping insertion in model container [2023-12-20 14:56:46,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:56:46,204 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2023-12-20 14:56:46,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:56:46,217 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:56:46,236 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2023-12-20 14:56:46,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:56:46,254 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:56:46,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46 WrapperNode [2023-12-20 14:56:46,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:56:46,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:56:46,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:56:46,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:56:46,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,280 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 208 [2023-12-20 14:56:46,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:56:46,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:56:46,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:56:46,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:56:46,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,306 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 14:56:46,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:56:46,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:56:46,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:56:46,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:56:46,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (1/1) ... [2023-12-20 14:56:46,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:56:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:56:46,363 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 14:56:46,370 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 14:56:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:56:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:56:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:56:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:56:46,461 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:56:46,462 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:56:46,675 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:56:46,710 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:56:46,710 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 14:56:46,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:56:46 BoogieIcfgContainer [2023-12-20 14:56:46,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:56:46,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:56:46,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:56:46,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:56:46,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:56:46" (1/3) ... [2023-12-20 14:56:46,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a4f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:56:46, skipping insertion in model container [2023-12-20 14:56:46,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:56:46" (2/3) ... [2023-12-20 14:56:46,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a4f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:56:46, skipping insertion in model container [2023-12-20 14:56:46,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:56:46" (3/3) ... [2023-12-20 14:56:46,716 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2023-12-20 14:56:46,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:56:46,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 14:56:46,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:56:46,767 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;@2074b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:56:46,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 14:56:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 14:56:46,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:46,775 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] [2023-12-20 14:56:46,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:46,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash -916349520, now seen corresponding path program 1 times [2023-12-20 14:56:46,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:46,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225278944] [2023-12-20 14:56:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:46,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:46,959 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 14:56:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225278944] [2023-12-20 14:56:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225278944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:46,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538477735] [2023-12-20 14:56:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:46,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,018 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,058 INFO L93 Difference]: Finished difference Result 108 states and 201 transitions. [2023-12-20 14:56:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-20 14:56:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,066 INFO L225 Difference]: With dead ends: 108 [2023-12-20 14:56:47,066 INFO L226 Difference]: Without dead ends: 98 [2023-12-20 14:56:47,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,070 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 75 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-20 14:56:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 66. [2023-12-20 14:56:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9230769230769231) internal successors, (125), 65 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 125 transitions. [2023-12-20 14:56:47,097 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 125 transitions. Word has length 21 [2023-12-20 14:56:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,097 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 125 transitions. [2023-12-20 14:56:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 125 transitions. [2023-12-20 14:56:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 14:56:47,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:56:47,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:56:47,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1384473070, now seen corresponding path program 1 times [2023-12-20 14:56:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785580498] [2023-12-20 14:56:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,153 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 14:56:47,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785580498] [2023-12-20 14:56:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785580498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8001445] [2023-12-20 14:56:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,156 INFO L87 Difference]: Start difference. First operand 66 states and 125 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,181 INFO L93 Difference]: Finished difference Result 163 states and 308 transitions. [2023-12-20 14:56:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-20 14:56:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,183 INFO L225 Difference]: With dead ends: 163 [2023-12-20 14:56:47,184 INFO L226 Difference]: Without dead ends: 98 [2023-12-20 14:56:47,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,185 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 210 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-20 14:56:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2023-12-20 14:56:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.9052631578947368) internal successors, (181), 95 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 181 transitions. [2023-12-20 14:56:47,193 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 181 transitions. Word has length 21 [2023-12-20 14:56:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,194 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 181 transitions. [2023-12-20 14:56:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 181 transitions. [2023-12-20 14:56:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 14:56:47,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,194 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] [2023-12-20 14:56:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:56:47,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1658147680, now seen corresponding path program 1 times [2023-12-20 14:56:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920780139] [2023-12-20 14:56:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,265 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 14:56:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920780139] [2023-12-20 14:56:47,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920780139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137559241] [2023-12-20 14:56:47,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,267 INFO L87 Difference]: Start difference. First operand 96 states and 181 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,299 INFO L93 Difference]: Finished difference Result 149 states and 275 transitions. [2023-12-20 14:56:47,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 14:56:47,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,300 INFO L225 Difference]: With dead ends: 149 [2023-12-20 14:56:47,300 INFO L226 Difference]: Without dead ends: 101 [2023-12-20 14:56:47,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,302 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 75 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-20 14:56:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-12-20 14:56:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.8673469387755102) internal successors, (183), 98 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 183 transitions. [2023-12-20 14:56:47,313 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 183 transitions. Word has length 22 [2023-12-20 14:56:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,313 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 183 transitions. [2023-12-20 14:56:47,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 183 transitions. [2023-12-20 14:56:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 14:56:47,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,314 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] [2023-12-20 14:56:47,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:56:47,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -30796062, now seen corresponding path program 1 times [2023-12-20 14:56:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134133669] [2023-12-20 14:56:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,346 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 14:56:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134133669] [2023-12-20 14:56:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134133669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518354523] [2023-12-20 14:56:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,348 INFO L87 Difference]: Start difference. First operand 99 states and 183 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,363 INFO L93 Difference]: Finished difference Result 192 states and 356 transitions. [2023-12-20 14:56:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 14:56:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,365 INFO L225 Difference]: With dead ends: 192 [2023-12-20 14:56:47,365 INFO L226 Difference]: Without dead ends: 190 [2023-12-20 14:56:47,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,366 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 70 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 182 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-20 14:56:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 132. [2023-12-20 14:56:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.8625954198473282) internal successors, (244), 131 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 244 transitions. [2023-12-20 14:56:47,374 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 244 transitions. Word has length 22 [2023-12-20 14:56:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,374 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 244 transitions. [2023-12-20 14:56:47,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 244 transitions. [2023-12-20 14:56:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 14:56:47,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,375 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] [2023-12-20 14:56:47,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:56:47,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2024940768, now seen corresponding path program 1 times [2023-12-20 14:56:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362216121] [2023-12-20 14:56:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,404 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 14:56:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362216121] [2023-12-20 14:56:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362216121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99121307] [2023-12-20 14:56:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,406 INFO L87 Difference]: Start difference. First operand 132 states and 244 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,426 INFO L93 Difference]: Finished difference Result 320 states and 594 transitions. [2023-12-20 14:56:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 14:56:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,429 INFO L225 Difference]: With dead ends: 320 [2023-12-20 14:56:47,429 INFO L226 Difference]: Without dead ends: 192 [2023-12-20 14:56:47,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,434 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-20 14:56:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2023-12-20 14:56:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.8518518518518519) internal successors, (350), 189 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 350 transitions. [2023-12-20 14:56:47,444 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 350 transitions. Word has length 22 [2023-12-20 14:56:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,444 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 350 transitions. [2023-12-20 14:56:47,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 350 transitions. [2023-12-20 14:56:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:56:47,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,445 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] [2023-12-20 14:56:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:56:47,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash -954465853, now seen corresponding path program 1 times [2023-12-20 14:56:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648774308] [2023-12-20 14:56:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,469 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 14:56:47,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648774308] [2023-12-20 14:56:47,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648774308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654984222] [2023-12-20 14:56:47,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,471 INFO L87 Difference]: Start difference. First operand 190 states and 350 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,485 INFO L93 Difference]: Finished difference Result 287 states and 525 transitions. [2023-12-20 14:56:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:56:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,487 INFO L225 Difference]: With dead ends: 287 [2023-12-20 14:56:47,487 INFO L226 Difference]: Without dead ends: 194 [2023-12-20 14:56:47,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,490 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 74 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-20 14:56:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2023-12-20 14:56:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.8324607329842932) internal successors, (350), 191 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 350 transitions. [2023-12-20 14:56:47,497 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 350 transitions. Word has length 23 [2023-12-20 14:56:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,498 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 350 transitions. [2023-12-20 14:56:47,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 350 transitions. [2023-12-20 14:56:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:56:47,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,499 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] [2023-12-20 14:56:47,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:56:47,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1651557701, now seen corresponding path program 1 times [2023-12-20 14:56:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992835279] [2023-12-20 14:56:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,561 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 14:56:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992835279] [2023-12-20 14:56:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992835279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483057823] [2023-12-20 14:56:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,564 INFO L87 Difference]: Start difference. First operand 192 states and 350 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,578 INFO L93 Difference]: Finished difference Result 560 states and 1024 transitions. [2023-12-20 14:56:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:56:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,581 INFO L225 Difference]: With dead ends: 560 [2023-12-20 14:56:47,581 INFO L226 Difference]: Without dead ends: 374 [2023-12-20 14:56:47,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,584 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 184 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-20 14:56:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2023-12-20 14:56:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.8167115902964959) internal successors, (674), 371 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 674 transitions. [2023-12-20 14:56:47,611 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 674 transitions. Word has length 23 [2023-12-20 14:56:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,611 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 674 transitions. [2023-12-20 14:56:47,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 674 transitions. [2023-12-20 14:56:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:56:47,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,612 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] [2023-12-20 14:56:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:56:47,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -649264889, now seen corresponding path program 1 times [2023-12-20 14:56:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725578533] [2023-12-20 14:56:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,656 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 14:56:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725578533] [2023-12-20 14:56:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725578533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082258751] [2023-12-20 14:56:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,658 INFO L87 Difference]: Start difference. First operand 372 states and 674 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,673 INFO L93 Difference]: Finished difference Result 480 states and 876 transitions. [2023-12-20 14:56:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:56:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,675 INFO L225 Difference]: With dead ends: 480 [2023-12-20 14:56:47,675 INFO L226 Difference]: Without dead ends: 478 [2023-12-20 14:56:47,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,676 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 67 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 257 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-20 14:56:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 372. [2023-12-20 14:56:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.8059299191374663) internal successors, (670), 371 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 670 transitions. [2023-12-20 14:56:47,688 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 670 transitions. Word has length 23 [2023-12-20 14:56:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,689 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 670 transitions. [2023-12-20 14:56:47,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 670 transitions. [2023-12-20 14:56:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-20 14:56:47,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,694 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] [2023-12-20 14:56:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:56:47,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -341106411, now seen corresponding path program 1 times [2023-12-20 14:56:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024681382] [2023-12-20 14:56:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,732 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 14:56:47,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024681382] [2023-12-20 14:56:47,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024681382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260468077] [2023-12-20 14:56:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,734 INFO L87 Difference]: Start difference. First operand 372 states and 670 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,749 INFO L93 Difference]: Finished difference Result 708 states and 1288 transitions. [2023-12-20 14:56:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-20 14:56:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,751 INFO L225 Difference]: With dead ends: 708 [2023-12-20 14:56:47,752 INFO L226 Difference]: Without dead ends: 706 [2023-12-20 14:56:47,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,756 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 64 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-12-20 14:56:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 512. [2023-12-20 14:56:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.7808219178082192) internal successors, (910), 511 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 910 transitions. [2023-12-20 14:56:47,771 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 910 transitions. Word has length 24 [2023-12-20 14:56:47,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,771 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 910 transitions. [2023-12-20 14:56:47,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 910 transitions. [2023-12-20 14:56:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-20 14:56:47,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,773 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] [2023-12-20 14:56:47,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:56:47,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1959716179, now seen corresponding path program 1 times [2023-12-20 14:56:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584069392] [2023-12-20 14:56:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,806 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 14:56:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584069392] [2023-12-20 14:56:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584069392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533200768] [2023-12-20 14:56:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,808 INFO L87 Difference]: Start difference. First operand 512 states and 910 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,830 INFO L93 Difference]: Finished difference Result 1236 states and 2208 transitions. [2023-12-20 14:56:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-20 14:56:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,834 INFO L225 Difference]: With dead ends: 1236 [2023-12-20 14:56:47,834 INFO L226 Difference]: Without dead ends: 730 [2023-12-20 14:56:47,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,835 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 70 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 213 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-20 14:56:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2023-12-20 14:56:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.7744154057771664) internal successors, (1290), 727 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1290 transitions. [2023-12-20 14:56:47,853 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1290 transitions. Word has length 24 [2023-12-20 14:56:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,853 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1290 transitions. [2023-12-20 14:56:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1290 transitions. [2023-12-20 14:56:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:56:47,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,854 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] [2023-12-20 14:56:47,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:56:47,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1984151398, now seen corresponding path program 1 times [2023-12-20 14:56:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794531615] [2023-12-20 14:56:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,884 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 14:56:47,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794531615] [2023-12-20 14:56:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794531615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475495339] [2023-12-20 14:56:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,887 INFO L87 Difference]: Start difference. First operand 728 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:47,909 INFO L93 Difference]: Finished difference Result 1100 states and 1944 transitions. [2023-12-20 14:56:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-20 14:56:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:47,913 INFO L225 Difference]: With dead ends: 1100 [2023-12-20 14:56:47,913 INFO L226 Difference]: Without dead ends: 742 [2023-12-20 14:56:47,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,914 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 72 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:47,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 225 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-20 14:56:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2023-12-20 14:56:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.756427604871448) internal successors, (1298), 739 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1298 transitions. [2023-12-20 14:56:47,931 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1298 transitions. Word has length 25 [2023-12-20 14:56:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:47,931 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1298 transitions. [2023-12-20 14:56:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1298 transitions. [2023-12-20 14:56:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:56:47,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:47,933 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] [2023-12-20 14:56:47,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:56:47,935 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:47,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 621872156, now seen corresponding path program 1 times [2023-12-20 14:56:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111958179] [2023-12-20 14:56:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:47,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:47,982 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 14:56:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:47,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111958179] [2023-12-20 14:56:47,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111958179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:47,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:47,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:47,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307191245] [2023-12-20 14:56:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:47,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:47,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:47,985 INFO L87 Difference]: Start difference. First operand 740 states and 1298 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,006 INFO L93 Difference]: Finished difference Result 1384 states and 2460 transitions. [2023-12-20 14:56:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-20 14:56:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,014 INFO L225 Difference]: With dead ends: 1384 [2023-12-20 14:56:48,015 INFO L226 Difference]: Without dead ends: 1382 [2023-12-20 14:56:48,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,016 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-12-20 14:56:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1028. [2023-12-20 14:56:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.7234664070107109) internal successors, (1770), 1027 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1770 transitions. [2023-12-20 14:56:48,036 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1770 transitions. Word has length 25 [2023-12-20 14:56:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,036 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1770 transitions. [2023-12-20 14:56:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1770 transitions. [2023-12-20 14:56:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:56:48,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,037 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] [2023-12-20 14:56:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:56:48,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1372272550, now seen corresponding path program 1 times [2023-12-20 14:56:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607551250] [2023-12-20 14:56:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,060 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 14:56:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607551250] [2023-12-20 14:56:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607551250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498229160] [2023-12-20 14:56:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,062 INFO L87 Difference]: Start difference. First operand 1028 states and 1770 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,087 INFO L93 Difference]: Finished difference Result 2456 states and 4252 transitions. [2023-12-20 14:56:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-20 14:56:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,091 INFO L225 Difference]: With dead ends: 2456 [2023-12-20 14:56:48,091 INFO L226 Difference]: Without dead ends: 1446 [2023-12-20 14:56:48,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,093 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 69 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 214 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-20 14:56:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1444. [2023-12-20 14:56:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.72002772002772) internal successors, (2482), 1443 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2482 transitions. [2023-12-20 14:56:48,119 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2482 transitions. Word has length 25 [2023-12-20 14:56:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,120 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2482 transitions. [2023-12-20 14:56:48,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2482 transitions. [2023-12-20 14:56:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 14:56:48,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,121 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] [2023-12-20 14:56:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:56:48,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2098380744, now seen corresponding path program 1 times [2023-12-20 14:56:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760539169] [2023-12-20 14:56:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,141 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 14:56:48,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760539169] [2023-12-20 14:56:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760539169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020675079] [2023-12-20 14:56:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,143 INFO L87 Difference]: Start difference. First operand 1444 states and 2482 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,163 INFO L93 Difference]: Finished difference Result 2168 states and 3716 transitions. [2023-12-20 14:56:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-20 14:56:48,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,167 INFO L225 Difference]: With dead ends: 2168 [2023-12-20 14:56:48,168 INFO L226 Difference]: Without dead ends: 1462 [2023-12-20 14:56:48,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,169 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 71 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-20 14:56:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1460. [2023-12-20 14:56:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 1.7011651816312543) internal successors, (2482), 1459 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2482 transitions. [2023-12-20 14:56:48,199 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2482 transitions. Word has length 26 [2023-12-20 14:56:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,199 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2482 transitions. [2023-12-20 14:56:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2482 transitions. [2023-12-20 14:56:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 14:56:48,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,200 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] [2023-12-20 14:56:48,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:56:48,200 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash 409437002, now seen corresponding path program 1 times [2023-12-20 14:56:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497451256] [2023-12-20 14:56:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,216 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 14:56:48,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497451256] [2023-12-20 14:56:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497451256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111382429] [2023-12-20 14:56:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,218 INFO L87 Difference]: Start difference. First operand 1460 states and 2482 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,247 INFO L93 Difference]: Finished difference Result 2696 states and 4660 transitions. [2023-12-20 14:56:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-20 14:56:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,254 INFO L225 Difference]: With dead ends: 2696 [2023-12-20 14:56:48,255 INFO L226 Difference]: Without dead ends: 2694 [2023-12-20 14:56:48,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,258 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 58 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2023-12-20 14:56:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2052. [2023-12-20 14:56:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 1.6626036079960995) internal successors, (3410), 2051 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3410 transitions. [2023-12-20 14:56:48,298 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3410 transitions. Word has length 26 [2023-12-20 14:56:48,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,298 INFO L495 AbstractCegarLoop]: Abstraction has 2052 states and 3410 transitions. [2023-12-20 14:56:48,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3410 transitions. [2023-12-20 14:56:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 14:56:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,299 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] [2023-12-20 14:56:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:56:48,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1584707704, now seen corresponding path program 1 times [2023-12-20 14:56:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138408653] [2023-12-20 14:56:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,316 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 14:56:48,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138408653] [2023-12-20 14:56:48,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138408653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751507368] [2023-12-20 14:56:48,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,318 INFO L87 Difference]: Start difference. First operand 2052 states and 3410 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,374 INFO L93 Difference]: Finished difference Result 4872 states and 8148 transitions. [2023-12-20 14:56:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-20 14:56:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,380 INFO L225 Difference]: With dead ends: 4872 [2023-12-20 14:56:48,380 INFO L226 Difference]: Without dead ends: 2854 [2023-12-20 14:56:48,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,383 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 215 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-12-20 14:56:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2852. [2023-12-20 14:56:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.6618730270080673) internal successors, (4738), 2851 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4738 transitions. [2023-12-20 14:56:48,450 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4738 transitions. Word has length 26 [2023-12-20 14:56:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,450 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 4738 transitions. [2023-12-20 14:56:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4738 transitions. [2023-12-20 14:56:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-20 14:56:48,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:56:48,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:56:48,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -192141393, now seen corresponding path program 1 times [2023-12-20 14:56:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317620217] [2023-12-20 14:56:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,477 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 14:56:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317620217] [2023-12-20 14:56:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317620217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559233056] [2023-12-20 14:56:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,479 INFO L87 Difference]: Start difference. First operand 2852 states and 4738 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,519 INFO L93 Difference]: Finished difference Result 4280 states and 7092 transitions. [2023-12-20 14:56:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-20 14:56:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,527 INFO L225 Difference]: With dead ends: 4280 [2023-12-20 14:56:48,527 INFO L226 Difference]: Without dead ends: 2886 [2023-12-20 14:56:48,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,530 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 70 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2023-12-20 14:56:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2884. [2023-12-20 14:56:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2883 states have (on average 1.6434269857787027) internal successors, (4738), 2883 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4738 transitions. [2023-12-20 14:56:48,588 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4738 transitions. Word has length 27 [2023-12-20 14:56:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,589 INFO L495 AbstractCegarLoop]: Abstraction has 2884 states and 4738 transitions. [2023-12-20 14:56:48,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4738 transitions. [2023-12-20 14:56:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-20 14:56:48,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,590 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] [2023-12-20 14:56:48,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:56:48,591 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1881085135, now seen corresponding path program 1 times [2023-12-20 14:56:48,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997232904] [2023-12-20 14:56:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,607 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 14:56:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997232904] [2023-12-20 14:56:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997232904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569008236] [2023-12-20 14:56:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,609 INFO L87 Difference]: Start difference. First operand 2884 states and 4738 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,665 INFO L93 Difference]: Finished difference Result 5256 states and 8804 transitions. [2023-12-20 14:56:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-20 14:56:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,679 INFO L225 Difference]: With dead ends: 5256 [2023-12-20 14:56:48,679 INFO L226 Difference]: Without dead ends: 5254 [2023-12-20 14:56:48,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,681 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 55 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5254 states. [2023-12-20 14:56:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5254 to 4100. [2023-12-20 14:56:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.6008782629909735) internal successors, (6562), 4099 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 6562 transitions. [2023-12-20 14:56:48,768 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 6562 transitions. Word has length 27 [2023-12-20 14:56:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:48,768 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 6562 transitions. [2023-12-20 14:56:48,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 6562 transitions. [2023-12-20 14:56:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-20 14:56:48,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:48,795 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] [2023-12-20 14:56:48,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:56:48,795 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:48,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash 419737455, now seen corresponding path program 1 times [2023-12-20 14:56:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:48,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710149939] [2023-12-20 14:56:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:48,810 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 14:56:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710149939] [2023-12-20 14:56:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710149939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724239770] [2023-12-20 14:56:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,811 INFO L87 Difference]: Start difference. First operand 4100 states and 6562 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:48,884 INFO L93 Difference]: Finished difference Result 9672 states and 15588 transitions. [2023-12-20 14:56:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:48,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-20 14:56:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:48,907 INFO L225 Difference]: With dead ends: 9672 [2023-12-20 14:56:48,907 INFO L226 Difference]: Without dead ends: 5638 [2023-12-20 14:56:48,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:48,912 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2023-12-20 14:56:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5636. [2023-12-20 14:56:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5635 states have (on average 1.6017746228926353) internal successors, (9026), 5635 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 9026 transitions. [2023-12-20 14:56:49,034 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 9026 transitions. Word has length 27 [2023-12-20 14:56:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:49,034 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 9026 transitions. [2023-12-20 14:56:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 9026 transitions. [2023-12-20 14:56:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 14:56:49,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:49,039 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] [2023-12-20 14:56:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:56:49,039 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:49,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1816116733, now seen corresponding path program 1 times [2023-12-20 14:56:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183169746] [2023-12-20 14:56:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:49,056 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 14:56:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183169746] [2023-12-20 14:56:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183169746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:49,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:49,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:49,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305702135] [2023-12-20 14:56:49,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:49,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,058 INFO L87 Difference]: Start difference. First operand 5636 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:49,124 INFO L93 Difference]: Finished difference Result 8456 states and 13508 transitions. [2023-12-20 14:56:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-20 14:56:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:49,134 INFO L225 Difference]: With dead ends: 8456 [2023-12-20 14:56:49,134 INFO L226 Difference]: Without dead ends: 5702 [2023-12-20 14:56:49,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,139 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:49,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 213 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2023-12-20 14:56:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5700. [2023-12-20 14:56:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.5837866292331988) internal successors, (9026), 5699 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 9026 transitions. [2023-12-20 14:56:49,262 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 9026 transitions. Word has length 28 [2023-12-20 14:56:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:49,262 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 9026 transitions. [2023-12-20 14:56:49,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 9026 transitions. [2023-12-20 14:56:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 14:56:49,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:49,265 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] [2023-12-20 14:56:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:56:49,266 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 127172991, now seen corresponding path program 1 times [2023-12-20 14:56:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682239697] [2023-12-20 14:56:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:49,283 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 14:56:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682239697] [2023-12-20 14:56:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682239697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702198323] [2023-12-20 14:56:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,285 INFO L87 Difference]: Start difference. First operand 5700 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:49,374 INFO L93 Difference]: Finished difference Result 10248 states and 16580 transitions. [2023-12-20 14:56:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-20 14:56:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:49,392 INFO L225 Difference]: With dead ends: 10248 [2023-12-20 14:56:49,393 INFO L226 Difference]: Without dead ends: 10246 [2023-12-20 14:56:49,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,398 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 52 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:49,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 170 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2023-12-20 14:56:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 8196. [2023-12-20 14:56:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.5387431360585724) internal successors, (12610), 8195 states have internal predecessors, (12610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 12610 transitions. [2023-12-20 14:56:49,598 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 12610 transitions. Word has length 28 [2023-12-20 14:56:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:49,598 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 12610 transitions. [2023-12-20 14:56:49,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 12610 transitions. [2023-12-20 14:56:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 14:56:49,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:49,605 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] [2023-12-20 14:56:49,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:56:49,605 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:49,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1866971715, now seen corresponding path program 1 times [2023-12-20 14:56:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639924515] [2023-12-20 14:56:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:49,637 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 14:56:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639924515] [2023-12-20 14:56:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639924515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395460602] [2023-12-20 14:56:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,638 INFO L87 Difference]: Start difference. First operand 8196 states and 12610 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:49,750 INFO L93 Difference]: Finished difference Result 19208 states and 29764 transitions. [2023-12-20 14:56:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-20 14:56:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:49,766 INFO L225 Difference]: With dead ends: 19208 [2023-12-20 14:56:49,766 INFO L226 Difference]: Without dead ends: 11142 [2023-12-20 14:56:49,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:49,778 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:49,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 217 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2023-12-20 14:56:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 11140. [2023-12-20 14:56:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11140 states, 11139 states have (on average 1.5399946135200646) internal successors, (17154), 11139 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11140 states to 11140 states and 17154 transitions. [2023-12-20 14:56:50,028 INFO L78 Accepts]: Start accepts. Automaton has 11140 states and 17154 transitions. Word has length 28 [2023-12-20 14:56:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:50,028 INFO L495 AbstractCegarLoop]: Abstraction has 11140 states and 17154 transitions. [2023-12-20 14:56:50,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 11140 states and 17154 transitions. [2023-12-20 14:56:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 14:56:50,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:50,036 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] [2023-12-20 14:56:50,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:56:50,036 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:50,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -352390460, now seen corresponding path program 1 times [2023-12-20 14:56:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787805177] [2023-12-20 14:56:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:50,051 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 14:56:50,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:50,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787805177] [2023-12-20 14:56:50,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787805177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:50,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:50,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:50,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45076413] [2023-12-20 14:56:50,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:50,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:50,054 INFO L87 Difference]: Start difference. First operand 11140 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:50,170 INFO L93 Difference]: Finished difference Result 16712 states and 25668 transitions. [2023-12-20 14:56:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 14:56:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:50,187 INFO L225 Difference]: With dead ends: 16712 [2023-12-20 14:56:50,187 INFO L226 Difference]: Without dead ends: 11270 [2023-12-20 14:56:50,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:50,196 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 68 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:50,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 209 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11270 states. [2023-12-20 14:56:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11270 to 11268. [2023-12-20 14:56:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.5224993343392208) internal successors, (17154), 11267 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 17154 transitions. [2023-12-20 14:56:50,430 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 17154 transitions. Word has length 29 [2023-12-20 14:56:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:50,431 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 17154 transitions. [2023-12-20 14:56:50,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 17154 transitions. [2023-12-20 14:56:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 14:56:50,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:50,437 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] [2023-12-20 14:56:50,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:56:50,437 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:50,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2041334202, now seen corresponding path program 1 times [2023-12-20 14:56:50,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:50,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116939325] [2023-12-20 14:56:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:50,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:50,450 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 14:56:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116939325] [2023-12-20 14:56:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116939325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:50,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574229854] [2023-12-20 14:56:50,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:50,451 INFO L87 Difference]: Start difference. First operand 11268 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:50,573 INFO L93 Difference]: Finished difference Result 19976 states and 31108 transitions. [2023-12-20 14:56:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 14:56:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:50,606 INFO L225 Difference]: With dead ends: 19976 [2023-12-20 14:56:50,606 INFO L226 Difference]: Without dead ends: 19974 [2023-12-20 14:56:50,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:50,616 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:50,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 168 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2023-12-20 14:56:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 16388. [2023-12-20 14:56:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16388 states, 16387 states have (on average 1.4764142307927015) internal successors, (24194), 16387 states have internal predecessors, (24194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16388 states to 16388 states and 24194 transitions. [2023-12-20 14:56:50,894 INFO L78 Accepts]: Start accepts. Automaton has 16388 states and 24194 transitions. Word has length 29 [2023-12-20 14:56:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:50,894 INFO L495 AbstractCegarLoop]: Abstraction has 16388 states and 24194 transitions. [2023-12-20 14:56:50,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 16388 states and 24194 transitions. [2023-12-20 14:56:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 14:56:50,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:50,907 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] [2023-12-20 14:56:50,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:56:50,907 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:50,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash 259488388, now seen corresponding path program 1 times [2023-12-20 14:56:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612236784] [2023-12-20 14:56:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:50,921 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 14:56:50,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:50,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612236784] [2023-12-20 14:56:50,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612236784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:50,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:50,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723343773] [2023-12-20 14:56:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:50,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:50,922 INFO L87 Difference]: Start difference. First operand 16388 states and 24194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:51,156 INFO L93 Difference]: Finished difference Result 38152 states and 56708 transitions. [2023-12-20 14:56:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 14:56:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:51,188 INFO L225 Difference]: With dead ends: 38152 [2023-12-20 14:56:51,188 INFO L226 Difference]: Without dead ends: 22022 [2023-12-20 14:56:51,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:51,201 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 65 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:51,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 218 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22022 states. [2023-12-20 14:56:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22022 to 22020. [2023-12-20 14:56:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22020 states, 22019 states have (on average 1.4766338162496027) internal successors, (32514), 22019 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22020 states to 22020 states and 32514 transitions. [2023-12-20 14:56:51,665 INFO L78 Accepts]: Start accepts. Automaton has 22020 states and 32514 transitions. Word has length 29 [2023-12-20 14:56:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:51,666 INFO L495 AbstractCegarLoop]: Abstraction has 22020 states and 32514 transitions. [2023-12-20 14:56:51,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 22020 states and 32514 transitions. [2023-12-20 14:56:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 14:56:51,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:51,680 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] [2023-12-20 14:56:51,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:56:51,681 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:51,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1143363634, now seen corresponding path program 1 times [2023-12-20 14:56:51,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:51,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71020920] [2023-12-20 14:56:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:51,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:51,703 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 14:56:51,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71020920] [2023-12-20 14:56:51,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71020920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:51,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:51,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689151539] [2023-12-20 14:56:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:51,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:51,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:51,705 INFO L87 Difference]: Start difference. First operand 22020 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:51,935 INFO L93 Difference]: Finished difference Result 33032 states and 48644 transitions. [2023-12-20 14:56:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 14:56:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:51,966 INFO L225 Difference]: With dead ends: 33032 [2023-12-20 14:56:51,966 INFO L226 Difference]: Without dead ends: 22278 [2023-12-20 14:56:51,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:51,982 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:51,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2023-12-20 14:56:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 22276. [2023-12-20 14:56:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22276 states, 22275 states have (on average 1.4596632996632997) internal successors, (32514), 22275 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22276 states to 22276 states and 32514 transitions. [2023-12-20 14:56:52,397 INFO L78 Accepts]: Start accepts. Automaton has 22276 states and 32514 transitions. Word has length 30 [2023-12-20 14:56:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:52,397 INFO L495 AbstractCegarLoop]: Abstraction has 22276 states and 32514 transitions. [2023-12-20 14:56:52,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22276 states and 32514 transitions. [2023-12-20 14:56:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 14:56:52,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:52,409 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] [2023-12-20 14:56:52,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:56:52,409 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:52,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash -545580108, now seen corresponding path program 1 times [2023-12-20 14:56:52,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:52,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710501903] [2023-12-20 14:56:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:52,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:52,431 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 14:56:52,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:52,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710501903] [2023-12-20 14:56:52,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710501903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:52,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672644020] [2023-12-20 14:56:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:52,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:52,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:52,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:52,432 INFO L87 Difference]: Start difference. First operand 22276 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:52,781 INFO L93 Difference]: Finished difference Result 38920 states and 58116 transitions. [2023-12-20 14:56:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:52,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 14:56:52,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:52,837 INFO L225 Difference]: With dead ends: 38920 [2023-12-20 14:56:52,837 INFO L226 Difference]: Without dead ends: 38918 [2023-12-20 14:56:52,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:52,847 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:52,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38918 states. [2023-12-20 14:56:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38918 to 32772. [2023-12-20 14:56:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32772 states, 32771 states have (on average 1.4139940801318238) internal successors, (46338), 32771 states have internal predecessors, (46338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32772 states to 32772 states and 46338 transitions. [2023-12-20 14:56:53,469 INFO L78 Accepts]: Start accepts. Automaton has 32772 states and 46338 transitions. Word has length 30 [2023-12-20 14:56:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:53,469 INFO L495 AbstractCegarLoop]: Abstraction has 32772 states and 46338 transitions. [2023-12-20 14:56:53,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32772 states and 46338 transitions. [2023-12-20 14:56:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 14:56:53,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:53,487 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] [2023-12-20 14:56:53,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:56:53,487 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:53,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1755242482, now seen corresponding path program 1 times [2023-12-20 14:56:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19176670] [2023-12-20 14:56:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:53,500 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 14:56:53,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19176670] [2023-12-20 14:56:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19176670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:53,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:53,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751331906] [2023-12-20 14:56:53,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:53,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:53,502 INFO L87 Difference]: Start difference. First operand 32772 states and 46338 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:53,966 INFO L93 Difference]: Finished difference Result 75784 states and 107780 transitions. [2023-12-20 14:56:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 14:56:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:54,020 INFO L225 Difference]: With dead ends: 75784 [2023-12-20 14:56:54,020 INFO L226 Difference]: Without dead ends: 43526 [2023-12-20 14:56:54,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:54,042 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:54,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43526 states. [2023-12-20 14:56:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43526 to 43524. [2023-12-20 14:56:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43524 states, 43523 states have (on average 1.411713346965972) internal successors, (61442), 43523 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43524 states to 43524 states and 61442 transitions. [2023-12-20 14:56:54,917 INFO L78 Accepts]: Start accepts. Automaton has 43524 states and 61442 transitions. Word has length 30 [2023-12-20 14:56:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:54,917 INFO L495 AbstractCegarLoop]: Abstraction has 43524 states and 61442 transitions. [2023-12-20 14:56:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 43524 states and 61442 transitions. [2023-12-20 14:56:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 14:56:54,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:54,933 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] [2023-12-20 14:56:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:56:54,934 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash 267100633, now seen corresponding path program 1 times [2023-12-20 14:56:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553382422] [2023-12-20 14:56:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:54,946 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 14:56:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553382422] [2023-12-20 14:56:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553382422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:54,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:54,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:54,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921079829] [2023-12-20 14:56:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:54,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:54,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:54,948 INFO L87 Difference]: Start difference. First operand 43524 states and 61442 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:55,415 INFO L93 Difference]: Finished difference Result 65288 states and 91908 transitions. [2023-12-20 14:56:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:55,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 14:56:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:55,459 INFO L225 Difference]: With dead ends: 65288 [2023-12-20 14:56:55,459 INFO L226 Difference]: Without dead ends: 44038 [2023-12-20 14:56:55,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:55,472 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:55,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 201 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44038 states. [2023-12-20 14:56:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44038 to 44036. [2023-12-20 14:56:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44036 states, 44035 states have (on average 1.3952991938230952) internal successors, (61442), 44035 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44036 states to 44036 states and 61442 transitions. [2023-12-20 14:56:56,264 INFO L78 Accepts]: Start accepts. Automaton has 44036 states and 61442 transitions. Word has length 31 [2023-12-20 14:56:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:56,264 INFO L495 AbstractCegarLoop]: Abstraction has 44036 states and 61442 transitions. [2023-12-20 14:56:56,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 44036 states and 61442 transitions. [2023-12-20 14:56:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 14:56:56,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:56,281 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] [2023-12-20 14:56:56,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 14:56:56,281 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:56,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1421843109, now seen corresponding path program 1 times [2023-12-20 14:56:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:56,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821769937] [2023-12-20 14:56:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:56,294 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 14:56:56,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:56,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821769937] [2023-12-20 14:56:56,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821769937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:56,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:56,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:56,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516400354] [2023-12-20 14:56:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:56,295 INFO L87 Difference]: Start difference. First operand 44036 states and 61442 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:57,074 INFO L93 Difference]: Finished difference Result 129032 states and 178180 transitions. [2023-12-20 14:56:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:56:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 14:56:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:57,161 INFO L225 Difference]: With dead ends: 129032 [2023-12-20 14:56:57,161 INFO L226 Difference]: Without dead ends: 86022 [2023-12-20 14:56:57,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:57,188 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:57,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:56:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86022 states. [2023-12-20 14:56:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86022 to 86020. [2023-12-20 14:56:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86020 states, 86019 states have (on average 1.3571187760843535) internal successors, (116738), 86019 states have internal predecessors, (116738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86020 states to 86020 states and 116738 transitions. [2023-12-20 14:56:58,788 INFO L78 Accepts]: Start accepts. Automaton has 86020 states and 116738 transitions. Word has length 31 [2023-12-20 14:56:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:58,788 INFO L495 AbstractCegarLoop]: Abstraction has 86020 states and 116738 transitions. [2023-12-20 14:56:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 86020 states and 116738 transitions. [2023-12-20 14:56:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 14:56:58,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:58,830 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] [2023-12-20 14:56:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 14:56:58,831 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:58,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash 572301597, now seen corresponding path program 1 times [2023-12-20 14:56:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688087814] [2023-12-20 14:56:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:58,855 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 14:56:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688087814] [2023-12-20 14:56:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688087814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:56:58,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933970981] [2023-12-20 14:56:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:56:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:56:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:56:58,856 INFO L87 Difference]: Start difference. First operand 86020 states and 116738 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:56:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:59,999 INFO L93 Difference]: Finished difference Result 96264 states and 135172 transitions. [2023-12-20 14:57:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 14:57:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:00,131 INFO L225 Difference]: With dead ends: 96264 [2023-12-20 14:57:00,131 INFO L226 Difference]: Without dead ends: 96262 [2023-12-20 14:57:00,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:00,164 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:00,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 217 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96262 states. [2023-12-20 14:57:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96262 to 86020. [2023-12-20 14:57:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86020 states, 86019 states have (on average 1.3452144293702555) internal successors, (115714), 86019 states have internal predecessors, (115714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86020 states to 86020 states and 115714 transitions. [2023-12-20 14:57:01,700 INFO L78 Accepts]: Start accepts. Automaton has 86020 states and 115714 transitions. Word has length 31 [2023-12-20 14:57:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:01,700 INFO L495 AbstractCegarLoop]: Abstraction has 86020 states and 115714 transitions. [2023-12-20 14:57:01,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 86020 states and 115714 transitions. [2023-12-20 14:57:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 14:57:01,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:01,732 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] [2023-12-20 14:57:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:57:01,733 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:01,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1127248281, now seen corresponding path program 1 times [2023-12-20 14:57:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:01,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166078664] [2023-12-20 14:57:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:01,745 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 14:57:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:01,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166078664] [2023-12-20 14:57:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166078664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231079525] [2023-12-20 14:57:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:01,747 INFO L87 Difference]: Start difference. First operand 86020 states and 115714 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:03,225 INFO L93 Difference]: Finished difference Result 146440 states and 200708 transitions. [2023-12-20 14:57:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-20 14:57:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:03,396 INFO L225 Difference]: With dead ends: 146440 [2023-12-20 14:57:03,396 INFO L226 Difference]: Without dead ends: 146438 [2023-12-20 14:57:03,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:03,428 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:03,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146438 states. [2023-12-20 14:57:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146438 to 130052. [2023-12-20 14:57:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130052 states, 130051 states have (on average 1.307071841046974) internal successors, (169986), 130051 states have internal predecessors, (169986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130052 states to 130052 states and 169986 transitions. [2023-12-20 14:57:05,649 INFO L78 Accepts]: Start accepts. Automaton has 130052 states and 169986 transitions. Word has length 32 [2023-12-20 14:57:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:05,649 INFO L495 AbstractCegarLoop]: Abstraction has 130052 states and 169986 transitions. [2023-12-20 14:57:05,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 130052 states and 169986 transitions. [2023-12-20 14:57:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 14:57:05,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:05,728 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] [2023-12-20 14:57:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 14:57:05,728 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:05,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1173574309, now seen corresponding path program 1 times [2023-12-20 14:57:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199872119] [2023-12-20 14:57:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:05,744 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 14:57:05,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199872119] [2023-12-20 14:57:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199872119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201930512] [2023-12-20 14:57:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:05,746 INFO L87 Difference]: Start difference. First operand 130052 states and 169986 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:07,570 INFO L93 Difference]: Finished difference Result 297992 states and 391172 transitions. [2023-12-20 14:57:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:07,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-20 14:57:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:07,952 INFO L225 Difference]: With dead ends: 297992 [2023-12-20 14:57:07,952 INFO L226 Difference]: Without dead ends: 168966 [2023-12-20 14:57:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:08,000 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 62 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:08,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168966 states. [2023-12-20 14:57:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168966 to 168964. [2023-12-20 14:57:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168964 states, 168963 states have (on average 1.2969585057083504) internal successors, (219138), 168963 states have internal predecessors, (219138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168964 states to 168964 states and 219138 transitions. [2023-12-20 14:57:11,324 INFO L78 Accepts]: Start accepts. Automaton has 168964 states and 219138 transitions. Word has length 32 [2023-12-20 14:57:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:11,324 INFO L495 AbstractCegarLoop]: Abstraction has 168964 states and 219138 transitions. [2023-12-20 14:57:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 168964 states and 219138 transitions. [2023-12-20 14:57:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 14:57:11,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:11,399 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] [2023-12-20 14:57:11,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 14:57:11,399 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:11,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -584742864, now seen corresponding path program 1 times [2023-12-20 14:57:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669137518] [2023-12-20 14:57:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:11,411 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 14:57:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:11,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669137518] [2023-12-20 14:57:11,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669137518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:11,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:11,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:11,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10144170] [2023-12-20 14:57:11,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:11,412 INFO L87 Difference]: Start difference. First operand 168964 states and 219138 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:13,275 INFO L93 Difference]: Finished difference Result 254984 states and 330756 transitions. [2023-12-20 14:57:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 14:57:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:13,467 INFO L225 Difference]: With dead ends: 254984 [2023-12-20 14:57:13,467 INFO L226 Difference]: Without dead ends: 172038 [2023-12-20 14:57:13,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:13,518 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 64 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:13,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172038 states. [2023-12-20 14:57:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172038 to 172036. [2023-12-20 14:57:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172036 states, 172035 states have (on average 1.2857034905687796) internal successors, (221186), 172035 states have internal predecessors, (221186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172036 states to 172036 states and 221186 transitions. [2023-12-20 14:57:16,578 INFO L78 Accepts]: Start accepts. Automaton has 172036 states and 221186 transitions. Word has length 33 [2023-12-20 14:57:16,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:16,579 INFO L495 AbstractCegarLoop]: Abstraction has 172036 states and 221186 transitions. [2023-12-20 14:57:16,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 172036 states and 221186 transitions. [2023-12-20 14:57:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 14:57:16,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:16,654 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] [2023-12-20 14:57:16,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 14:57:16,655 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2021280690, now seen corresponding path program 1 times [2023-12-20 14:57:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791242283] [2023-12-20 14:57:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:16,667 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 14:57:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791242283] [2023-12-20 14:57:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791242283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769434119] [2023-12-20 14:57:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:16,668 INFO L87 Difference]: Start difference. First operand 172036 states and 221186 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:19,448 INFO L93 Difference]: Finished difference Result 286728 states and 372740 transitions. [2023-12-20 14:57:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:19,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 14:57:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:19,816 INFO L225 Difference]: With dead ends: 286728 [2023-12-20 14:57:19,816 INFO L226 Difference]: Without dead ends: 286726 [2023-12-20 14:57:19,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:19,870 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:19,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286726 states. [2023-12-20 14:57:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286726 to 262148. [2023-12-20 14:57:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262148 states, 262147 states have (on average 1.2499933243561818) internal successors, (327682), 262147 states have internal predecessors, (327682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262148 states to 262148 states and 327682 transitions. [2023-12-20 14:57:24,183 INFO L78 Accepts]: Start accepts. Automaton has 262148 states and 327682 transitions. Word has length 33 [2023-12-20 14:57:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:24,184 INFO L495 AbstractCegarLoop]: Abstraction has 262148 states and 327682 transitions. [2023-12-20 14:57:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 262148 states and 327682 transitions. [2023-12-20 14:57:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 14:57:24,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:24,627 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] [2023-12-20 14:57:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 14:57:24,627 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:24,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 27135984, now seen corresponding path program 1 times [2023-12-20 14:57:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:24,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258749744] [2023-12-20 14:57:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:24,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:24,638 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 14:57:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258749744] [2023-12-20 14:57:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258749744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:24,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034683383] [2023-12-20 14:57:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:24,639 INFO L87 Difference]: Start difference. First operand 262148 states and 327682 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:28,201 INFO L93 Difference]: Finished difference Result 593928 states and 741380 transitions. [2023-12-20 14:57:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 14:57:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:29,069 INFO L225 Difference]: With dead ends: 593928 [2023-12-20 14:57:29,069 INFO L226 Difference]: Without dead ends: 335878 [2023-12-20 14:57:29,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:29,215 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 61 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:29,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335878 states. [2023-12-20 14:57:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335878 to 335876. [2023-12-20 14:57:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335876 states, 335875 states have (on average 1.2317022701898028) internal successors, (413698), 335875 states have internal predecessors, (413698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335876 states to 335876 states and 413698 transitions. [2023-12-20 14:57:35,937 INFO L78 Accepts]: Start accepts. Automaton has 335876 states and 413698 transitions. Word has length 33 [2023-12-20 14:57:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:57:35,937 INFO L495 AbstractCegarLoop]: Abstraction has 335876 states and 413698 transitions. [2023-12-20 14:57:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 335876 states and 413698 transitions. [2023-12-20 14:57:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 14:57:36,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:57:36,127 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] [2023-12-20 14:57:36,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 14:57:36,128 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:57:36,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:57:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1764592230, now seen corresponding path program 1 times [2023-12-20 14:57:36,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:57:36,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036549861] [2023-12-20 14:57:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:57:36,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:57:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:57:36,142 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 14:57:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:57:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036549861] [2023-12-20 14:57:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036549861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:57:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:57:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:57:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582937730] [2023-12-20 14:57:36,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:57:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:57:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:57:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:57:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:36,143 INFO L87 Difference]: Start difference. First operand 335876 states and 413698 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:57:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:57:39,737 INFO L93 Difference]: Finished difference Result 503816 states and 618500 transitions. [2023-12-20 14:57:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:57:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 14:57:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:57:40,441 INFO L225 Difference]: With dead ends: 503816 [2023-12-20 14:57:40,441 INFO L226 Difference]: Without dead ends: 339974 [2023-12-20 14:57:40,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:57:40,528 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 63 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:57:40,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:57:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339974 states.