/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 20:00:45,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 20:00:45,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 20:00:45,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 20:00:45,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 20:00:45,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 20:00:45,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 20:00:45,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 20:00:45,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 20:00:45,932 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 20:00:45,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 20:00:45,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 20:00:45,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 20:00:45,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 20:00:45,933 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 20:00:45,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 20:00:45,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 20:00:45,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 20:00:45,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 20:00:45,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 20:00:45,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 20:00:45,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 20:00:45,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 20:00:45,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 20:00:45,936 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 20:00:45,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 20:00:45,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 20:00:45,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 20:00:45,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 20:00:45,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:00:45,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 20:00:45,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 20:00:45,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 20:00:45,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 20:00:45,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 20:00:45,938 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 20:00:45,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 20:00:45,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 20:00:45,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 20:00:45,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 20:00:45,939 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 20:00:46,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 20:00:46,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 20:00:46,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 20:00:46,100 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 20:00:46,100 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 20:00:46,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-16 20:00:47,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 20:00:47,372 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 20:00:47,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-16 20:00:47,395 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35cc03e45/79f7030d56e74b0ab0d4167ed5230fe3/FLAG36fcbe771 [2023-12-16 20:00:47,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35cc03e45/79f7030d56e74b0ab0d4167ed5230fe3 [2023-12-16 20:00:47,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 20:00:47,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 20:00:47,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 20:00:47,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 20:00:47,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 20:00:47,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:47,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c31352d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47, skipping insertion in model container [2023-12-16 20:00:47,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:47,466 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 20:00:47,590 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1259,1272] [2023-12-16 20:00:47,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:00:47,776 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 20:00:47,784 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1259,1272] [2023-12-16 20:00:47,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:00:47,897 INFO L206 MainTranslator]: Completed translation [2023-12-16 20:00:47,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47 WrapperNode [2023-12-16 20:00:47,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 20:00:47,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 20:00:47,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 20:00:47,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 20:00:47,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:47,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,126 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2436 [2023-12-16 20:00:48,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 20:00:48,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 20:00:48,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 20:00:48,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 20:00:48,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,234 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]. [2023-12-16 20:00:48,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 20:00:48,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 20:00:48,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 20:00:48,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 20:00:48,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (1/1) ... [2023-12-16 20:00:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:00:48,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:48,450 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) [2023-12-16 20:00:48,481 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 [2023-12-16 20:00:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 20:00:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 20:00:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 20:00:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 20:00:48,711 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 20:00:48,713 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 20:00:50,533 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 20:00:50,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 20:00:50,624 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 20:00:50,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:00:50 BoogieIcfgContainer [2023-12-16 20:00:50,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 20:00:50,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 20:00:50,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 20:00:50,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 20:00:50,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:00:47" (1/3) ... [2023-12-16 20:00:50,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162af372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:00:50, skipping insertion in model container [2023-12-16 20:00:50,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:47" (2/3) ... [2023-12-16 20:00:50,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162af372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:00:50, skipping insertion in model container [2023-12-16 20:00:50,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:00:50" (3/3) ... [2023-12-16 20:00:50,635 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-16 20:00:50,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 20:00:50,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 20:00:50,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 20:00:50,709 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;@2245929c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 20:00:50,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 20:00:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 486 states have internal predecessors, (809), 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) [2023-12-16 20:00:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 20:00:50,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:50,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:50,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1685076078, now seen corresponding path program 1 times [2023-12-16 20:00:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509616218] [2023-12-16 20:00:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509616218] [2023-12-16 20:00:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509616218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:51,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016016797] [2023-12-16 20:00:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:00:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:00:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:51,342 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 486 states have internal predecessors, (809), 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 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-16 20:00:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:51,441 INFO L93 Difference]: Finished difference Result 934 states and 1554 transitions. [2023-12-16 20:00:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:00:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2023-12-16 20:00:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:51,458 INFO L225 Difference]: With dead ends: 934 [2023-12-16 20:00:51,458 INFO L226 Difference]: Without dead ends: 487 [2023-12-16 20:00:51,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:51,468 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:51,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2401 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-16 20:00:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2023-12-16 20:00:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.6604938271604939) internal successors, (807), 486 states have internal predecessors, (807), 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) [2023-12-16 20:00:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 807 transitions. [2023-12-16 20:00:51,529 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 807 transitions. Word has length 50 [2023-12-16 20:00:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:51,529 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 807 transitions. [2023-12-16 20:00:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-16 20:00:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 807 transitions. [2023-12-16 20:00:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 20:00:51,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:51,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:51,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 20:00:51,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:51,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash -696025642, now seen corresponding path program 1 times [2023-12-16 20:00:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293816215] [2023-12-16 20:00:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:51,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293816215] [2023-12-16 20:00:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293816215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:51,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:51,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:51,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270327908] [2023-12-16 20:00:51,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:51,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:00:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:00:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:51,687 INFO L87 Difference]: Start difference. First operand 487 states and 807 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-16 20:00:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:51,714 INFO L93 Difference]: Finished difference Result 937 states and 1552 transitions. [2023-12-16 20:00:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:00:51,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2023-12-16 20:00:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:51,717 INFO L225 Difference]: With dead ends: 937 [2023-12-16 20:00:51,717 INFO L226 Difference]: Without dead ends: 490 [2023-12-16 20:00:51,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:51,718 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:51,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2399 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-16 20:00:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2023-12-16 20:00:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.6577868852459017) internal successors, (809), 488 states have internal predecessors, (809), 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) [2023-12-16 20:00:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 809 transitions. [2023-12-16 20:00:51,733 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 809 transitions. Word has length 51 [2023-12-16 20:00:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:51,734 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 809 transitions. [2023-12-16 20:00:51,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-16 20:00:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 809 transitions. [2023-12-16 20:00:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 20:00:51,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:51,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 20:00:51,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:51,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1462616750, now seen corresponding path program 1 times [2023-12-16 20:00:51,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919455634] [2023-12-16 20:00:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:52,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:52,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919455634] [2023-12-16 20:00:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919455634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:52,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37541356] [2023-12-16 20:00:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:52,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:52,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:00:52,375 INFO L87 Difference]: Start difference. First operand 489 states and 809 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2023-12-16 20:00:52,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:52,686 INFO L93 Difference]: Finished difference Result 1839 states and 3042 transitions. [2023-12-16 20:00:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2023-12-16 20:00:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:52,691 INFO L225 Difference]: With dead ends: 1839 [2023-12-16 20:00:52,691 INFO L226 Difference]: Without dead ends: 1390 [2023-12-16 20:00:52,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 20:00:52,692 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 6539 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6539 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6539 Valid, 5613 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-12-16 20:00:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 512. [2023-12-16 20:00:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.649706457925636) internal successors, (843), 511 states have internal predecessors, (843), 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) [2023-12-16 20:00:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 843 transitions. [2023-12-16 20:00:52,705 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 843 transitions. Word has length 52 [2023-12-16 20:00:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:52,705 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 843 transitions. [2023-12-16 20:00:52,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2023-12-16 20:00:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 843 transitions. [2023-12-16 20:00:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 20:00:52,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:52,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:52,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 20:00:52,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:52,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2014227266, now seen corresponding path program 1 times [2023-12-16 20:00:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:52,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263605479] [2023-12-16 20:00:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:53,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:53,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263605479] [2023-12-16 20:00:53,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263605479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:53,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:53,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411291068] [2023-12-16 20:00:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:53,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:53,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:00:53,035 INFO L87 Difference]: Start difference. First operand 512 states and 843 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-12-16 20:00:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:53,285 INFO L93 Difference]: Finished difference Result 2303 states and 3807 transitions. [2023-12-16 20:00:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 20:00:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2023-12-16 20:00:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:53,291 INFO L225 Difference]: With dead ends: 2303 [2023-12-16 20:00:53,291 INFO L226 Difference]: Without dead ends: 1854 [2023-12-16 20:00:53,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-16 20:00:53,293 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 9521 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9521 SdHoareTripleChecker+Valid, 5719 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:53,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9521 Valid, 5719 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2023-12-16 20:00:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 520. [2023-12-16 20:00:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.6454720616570329) internal successors, (854), 519 states have internal predecessors, (854), 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) [2023-12-16 20:00:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 854 transitions. [2023-12-16 20:00:53,310 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 854 transitions. Word has length 53 [2023-12-16 20:00:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:53,310 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 854 transitions. [2023-12-16 20:00:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-12-16 20:00:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 854 transitions. [2023-12-16 20:00:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 20:00:53,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:53,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:53,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 20:00:53,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:53,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1664833120, now seen corresponding path program 1 times [2023-12-16 20:00:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:53,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112131421] [2023-12-16 20:00:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112131421] [2023-12-16 20:00:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112131421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:53,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:00:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86087592] [2023-12-16 20:00:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:00:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:00:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:53,470 INFO L87 Difference]: Start difference. First operand 520 states and 854 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2023-12-16 20:00:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:53,607 INFO L93 Difference]: Finished difference Result 1866 states and 3071 transitions. [2023-12-16 20:00:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2023-12-16 20:00:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:53,611 INFO L225 Difference]: With dead ends: 1866 [2023-12-16 20:00:53,612 INFO L226 Difference]: Without dead ends: 1401 [2023-12-16 20:00:53,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:00:53,613 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 5859 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:53,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 4025 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-16 20:00:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 522. [2023-12-16 20:00:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.6410748560460653) internal successors, (855), 521 states have internal predecessors, (855), 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) [2023-12-16 20:00:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 855 transitions. [2023-12-16 20:00:53,623 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 855 transitions. Word has length 54 [2023-12-16 20:00:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:53,623 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 855 transitions. [2023-12-16 20:00:53,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2023-12-16 20:00:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 855 transitions. [2023-12-16 20:00:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 20:00:53,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:53,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:53,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 20:00:53,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:53,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2039145694, now seen corresponding path program 1 times [2023-12-16 20:00:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:53,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507235793] [2023-12-16 20:00:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:53,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507235793] [2023-12-16 20:00:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507235793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:53,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:53,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652951440] [2023-12-16 20:00:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:00:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:00:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:53,741 INFO L87 Difference]: Start difference. First operand 522 states and 855 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-12-16 20:00:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:53,796 INFO L93 Difference]: Finished difference Result 1406 states and 2315 transitions. [2023-12-16 20:00:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:00:53,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2023-12-16 20:00:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:53,799 INFO L225 Difference]: With dead ends: 1406 [2023-12-16 20:00:53,799 INFO L226 Difference]: Without dead ends: 940 [2023-12-16 20:00:53,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:53,800 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 2950 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:53,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2950 Valid, 2408 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-16 20:00:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 512. [2023-12-16 20:00:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.643835616438356) internal successors, (840), 511 states have internal predecessors, (840), 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) [2023-12-16 20:00:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 840 transitions. [2023-12-16 20:00:53,808 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 840 transitions. Word has length 55 [2023-12-16 20:00:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:53,809 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 840 transitions. [2023-12-16 20:00:53,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-12-16 20:00:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 840 transitions. [2023-12-16 20:00:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-16 20:00:53,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:53,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 20:00:53,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:53,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2116102422, now seen corresponding path program 1 times [2023-12-16 20:00:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163108151] [2023-12-16 20:00:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:55,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163108151] [2023-12-16 20:00:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163108151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:55,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:55,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:00:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731120223] [2023-12-16 20:00:55,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:55,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:00:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:00:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:55,871 INFO L87 Difference]: Start difference. First operand 512 states and 840 transitions. Second operand has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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) [2023-12-16 20:00:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:56,074 INFO L93 Difference]: Finished difference Result 1865 states and 3075 transitions. [2023-12-16 20:00:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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 348 [2023-12-16 20:00:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:56,093 INFO L225 Difference]: With dead ends: 1865 [2023-12-16 20:00:56,093 INFO L226 Difference]: Without dead ends: 1416 [2023-12-16 20:00:56,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:00:56,094 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 5846 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5846 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:56,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5846 Valid, 3992 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-16 20:00:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 527. [2023-12-16 20:00:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.6349809885931559) internal successors, (860), 526 states have internal predecessors, (860), 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) [2023-12-16 20:00:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 860 transitions. [2023-12-16 20:00:56,115 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 860 transitions. Word has length 348 [2023-12-16 20:00:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:56,115 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 860 transitions. [2023-12-16 20:00:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 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) [2023-12-16 20:00:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 860 transitions. [2023-12-16 20:00:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-16 20:00:56,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:56,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 20:00:56,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -833806632, now seen corresponding path program 1 times [2023-12-16 20:00:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:56,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900647201] [2023-12-16 20:00:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900647201] [2023-12-16 20:00:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900647201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:00:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62493023] [2023-12-16 20:00:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:00:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:00:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:58,536 INFO L87 Difference]: Start difference. First operand 527 states and 860 transitions. Second operand has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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) [2023-12-16 20:00:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:58,699 INFO L93 Difference]: Finished difference Result 1916 states and 3158 transitions. [2023-12-16 20:00:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:58,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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 349 [2023-12-16 20:00:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:58,705 INFO L225 Difference]: With dead ends: 1916 [2023-12-16 20:00:58,705 INFO L226 Difference]: Without dead ends: 1467 [2023-12-16 20:00:58,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:00:58,708 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 5837 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5837 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:58,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5837 Valid, 4158 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-12-16 20:00:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 572. [2023-12-16 20:00:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.6339754816112084) internal successors, (933), 571 states have internal predecessors, (933), 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) [2023-12-16 20:00:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 933 transitions. [2023-12-16 20:00:58,737 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 933 transitions. Word has length 349 [2023-12-16 20:00:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:58,738 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 933 transitions. [2023-12-16 20:00:58,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 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) [2023-12-16 20:00:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 933 transitions. [2023-12-16 20:00:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-16 20:00:58,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:58,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 20:00:58,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:58,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -175723074, now seen corresponding path program 1 times [2023-12-16 20:00:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493725386] [2023-12-16 20:00:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:00,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493725386] [2023-12-16 20:01:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493725386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:01:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376479974] [2023-12-16 20:01:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:00,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:01:00,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:01:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:01:00,751 INFO L87 Difference]: Start difference. First operand 572 states and 933 transitions. Second operand has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 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) [2023-12-16 20:01:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:01,129 INFO L93 Difference]: Finished difference Result 2377 states and 3912 transitions. [2023-12-16 20:01:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 20:01:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 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) Word has length 350 [2023-12-16 20:01:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:01,146 INFO L225 Difference]: With dead ends: 2377 [2023-12-16 20:01:01,147 INFO L226 Difference]: Without dead ends: 1893 [2023-12-16 20:01:01,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-16 20:01:01,165 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 9444 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9444 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:01,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9444 Valid, 5723 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-16 20:01:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 577. [2023-12-16 20:01:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.6284722222222223) internal successors, (938), 576 states have internal predecessors, (938), 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) [2023-12-16 20:01:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 938 transitions. [2023-12-16 20:01:01,201 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 938 transitions. Word has length 350 [2023-12-16 20:01:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:01,201 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 938 transitions. [2023-12-16 20:01:01,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 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) [2023-12-16 20:01:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 938 transitions. [2023-12-16 20:01:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 20:01:01,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:01,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:01,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 20:01:01,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:01,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash -874151788, now seen corresponding path program 1 times [2023-12-16 20:01:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370106596] [2023-12-16 20:01:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370106596] [2023-12-16 20:01:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370106596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:01:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19508633] [2023-12-16 20:01:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:03,074 INFO L87 Difference]: Start difference. First operand 577 states and 938 transitions. Second operand has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 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) [2023-12-16 20:01:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:03,243 INFO L93 Difference]: Finished difference Result 2118 states and 3477 transitions. [2023-12-16 20:01:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:01:03,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 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 351 [2023-12-16 20:01:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:03,248 INFO L225 Difference]: With dead ends: 2118 [2023-12-16 20:01:03,249 INFO L226 Difference]: Without dead ends: 1666 [2023-12-16 20:01:03,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 20:01:03,250 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 2299 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:03,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 5259 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-12-16 20:01:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 649. [2023-12-16 20:01:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.6203703703703705) internal successors, (1050), 648 states have internal predecessors, (1050), 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) [2023-12-16 20:01:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1050 transitions. [2023-12-16 20:01:03,277 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1050 transitions. Word has length 351 [2023-12-16 20:01:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:03,278 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1050 transitions. [2023-12-16 20:01:03,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 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) [2023-12-16 20:01:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1050 transitions. [2023-12-16 20:01:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 20:01:03,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:03,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 20:01:03,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:03,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -241541586, now seen corresponding path program 1 times [2023-12-16 20:01:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342660976] [2023-12-16 20:01:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:03,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:04,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342660976] [2023-12-16 20:01:04,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342660976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208839615] [2023-12-16 20:01:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:01:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:01:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:01:04,866 INFO L87 Difference]: Start difference. First operand 649 states and 1050 transitions. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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) [2023-12-16 20:01:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:04,960 INFO L93 Difference]: Finished difference Result 2132 states and 3493 transitions. [2023-12-16 20:01:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 20:01:04,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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 351 [2023-12-16 20:01:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:04,965 INFO L225 Difference]: With dead ends: 2132 [2023-12-16 20:01:04,966 INFO L226 Difference]: Without dead ends: 1636 [2023-12-16 20:01:04,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:04,967 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1439 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:04,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 6543 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-16 20:01:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 680. [2023-12-16 20:01:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.6126656848306333) internal successors, (1095), 679 states have internal predecessors, (1095), 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) [2023-12-16 20:01:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1095 transitions. [2023-12-16 20:01:04,983 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1095 transitions. Word has length 351 [2023-12-16 20:01:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:04,983 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1095 transitions. [2023-12-16 20:01:04,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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) [2023-12-16 20:01:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1095 transitions. [2023-12-16 20:01:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-16 20:01:04,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:04,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 20:01:04,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:04,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1872110196, now seen corresponding path program 1 times [2023-12-16 20:01:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871350612] [2023-12-16 20:01:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:05,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871350612] [2023-12-16 20:01:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871350612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:05,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:05,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:05,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826948235] [2023-12-16 20:01:05,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:05,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:05,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:05,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:05,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:05,593 INFO L87 Difference]: Start difference. First operand 680 states and 1095 transitions. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-12-16 20:01:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:05,648 INFO L93 Difference]: Finished difference Result 1769 states and 2881 transitions. [2023-12-16 20:01:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:01:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 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 352 [2023-12-16 20:01:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:05,653 INFO L225 Difference]: With dead ends: 1769 [2023-12-16 20:01:05,653 INFO L226 Difference]: Without dead ends: 1250 [2023-12-16 20:01:05,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:05,654 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 3031 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 2513 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-16 20:01:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 734. [2023-12-16 20:01:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.6084583901773533) internal successors, (1179), 733 states have internal predecessors, (1179), 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) [2023-12-16 20:01:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1179 transitions. [2023-12-16 20:01:05,667 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1179 transitions. Word has length 352 [2023-12-16 20:01:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:05,667 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1179 transitions. [2023-12-16 20:01:05,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-12-16 20:01:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1179 transitions. [2023-12-16 20:01:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-16 20:01:05,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:05,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 20:01:05,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:05,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash 535595354, now seen corresponding path program 1 times [2023-12-16 20:01:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:05,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076361511] [2023-12-16 20:01:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076361511] [2023-12-16 20:01:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076361511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:01:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656891522] [2023-12-16 20:01:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:07,220 INFO L87 Difference]: Start difference. First operand 734 states and 1179 transitions. Second operand has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 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) [2023-12-16 20:01:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:07,394 INFO L93 Difference]: Finished difference Result 2374 states and 3873 transitions. [2023-12-16 20:01:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:01:07,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 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 352 [2023-12-16 20:01:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:07,399 INFO L225 Difference]: With dead ends: 2374 [2023-12-16 20:01:07,399 INFO L226 Difference]: Without dead ends: 1855 [2023-12-16 20:01:07,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-16 20:01:07,401 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 6546 mSDsluCounter, 4710 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6546 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:07,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6546 Valid, 5766 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2023-12-16 20:01:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 820. [2023-12-16 20:01:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.6092796092796093) internal successors, (1318), 819 states have internal predecessors, (1318), 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) [2023-12-16 20:01:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1318 transitions. [2023-12-16 20:01:07,416 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1318 transitions. Word has length 352 [2023-12-16 20:01:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:07,416 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1318 transitions. [2023-12-16 20:01:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 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) [2023-12-16 20:01:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1318 transitions. [2023-12-16 20:01:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-16 20:01:07,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:07,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:07,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 20:01:07,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:07,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash 878204144, now seen corresponding path program 1 times [2023-12-16 20:01:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833005588] [2023-12-16 20:01:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:09,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833005588] [2023-12-16 20:01:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833005588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:09,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:09,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:01:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37661498] [2023-12-16 20:01:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:09,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:09,398 INFO L87 Difference]: Start difference. First operand 820 states and 1318 transitions. Second operand has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 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) [2023-12-16 20:01:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:09,582 INFO L93 Difference]: Finished difference Result 2523 states and 4117 transitions. [2023-12-16 20:01:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:01:09,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 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 353 [2023-12-16 20:01:09,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:09,588 INFO L225 Difference]: With dead ends: 2523 [2023-12-16 20:01:09,588 INFO L226 Difference]: Without dead ends: 2004 [2023-12-16 20:01:09,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-16 20:01:09,589 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 3038 mSDsluCounter, 5693 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:09,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3038 Valid, 6936 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-12-16 20:01:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 884. [2023-12-16 20:01:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.6115515288788222) internal successors, (1423), 883 states have internal predecessors, (1423), 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) [2023-12-16 20:01:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1423 transitions. [2023-12-16 20:01:09,608 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1423 transitions. Word has length 353 [2023-12-16 20:01:09,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:09,609 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1423 transitions. [2023-12-16 20:01:09,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 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) [2023-12-16 20:01:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1423 transitions. [2023-12-16 20:01:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-16 20:01:09,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:09,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:09,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 20:01:09,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:09,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1759245309, now seen corresponding path program 1 times [2023-12-16 20:01:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006363259] [2023-12-16 20:01:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:09,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006363259] [2023-12-16 20:01:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006363259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 20:01:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141904923] [2023-12-16 20:01:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:01:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:01:11,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:01:11,451 INFO L87 Difference]: Start difference. First operand 884 states and 1423 transitions. Second operand has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 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) [2023-12-16 20:01:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:11,683 INFO L93 Difference]: Finished difference Result 2772 states and 4520 transitions. [2023-12-16 20:01:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:01:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 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 354 [2023-12-16 20:01:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:11,714 INFO L225 Difference]: With dead ends: 2772 [2023-12-16 20:01:11,715 INFO L226 Difference]: Without dead ends: 2189 [2023-12-16 20:01:11,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-16 20:01:11,717 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 5155 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 6075 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:11,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 6075 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2023-12-16 20:01:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 952. [2023-12-16 20:01:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.61198738170347) internal successors, (1533), 951 states have internal predecessors, (1533), 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) [2023-12-16 20:01:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1533 transitions. [2023-12-16 20:01:11,735 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1533 transitions. Word has length 354 [2023-12-16 20:01:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:11,735 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1533 transitions. [2023-12-16 20:01:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 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) [2023-12-16 20:01:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1533 transitions. [2023-12-16 20:01:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-16 20:01:11,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:11,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:11,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 20:01:11,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 645450908, now seen corresponding path program 1 times [2023-12-16 20:01:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517799351] [2023-12-16 20:01:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:12,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:12,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517799351] [2023-12-16 20:01:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517799351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:12,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980241280] [2023-12-16 20:01:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:12,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:12,921 INFO L87 Difference]: Start difference. First operand 952 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-12-16 20:01:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:12,982 INFO L93 Difference]: Finished difference Result 2394 states and 3901 transitions. [2023-12-16 20:01:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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 355 [2023-12-16 20:01:12,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:12,999 INFO L225 Difference]: With dead ends: 2394 [2023-12-16 20:01:13,000 INFO L226 Difference]: Without dead ends: 1743 [2023-12-16 20:01:13,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:13,001 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 1544 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:13,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 4488 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-12-16 20:01:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1023. [2023-12-16 20:01:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.614481409001957) internal successors, (1650), 1022 states have internal predecessors, (1650), 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) [2023-12-16 20:01:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1650 transitions. [2023-12-16 20:01:13,024 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1650 transitions. Word has length 355 [2023-12-16 20:01:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:13,024 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1650 transitions. [2023-12-16 20:01:13,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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) [2023-12-16 20:01:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1650 transitions. [2023-12-16 20:01:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-16 20:01:13,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:13,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:13,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 20:01:13,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:13,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash -377445479, now seen corresponding path program 1 times [2023-12-16 20:01:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:13,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069132662] [2023-12-16 20:01:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:14,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:14,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069132662] [2023-12-16 20:01:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069132662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464065827] [2023-12-16 20:01:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:14,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:14,256 INFO L87 Difference]: Start difference. First operand 1023 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2023-12-16 20:01:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:14,316 INFO L93 Difference]: Finished difference Result 2475 states and 4032 transitions. [2023-12-16 20:01:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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 356 [2023-12-16 20:01:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:14,319 INFO L225 Difference]: With dead ends: 2475 [2023-12-16 20:01:14,319 INFO L226 Difference]: Without dead ends: 1753 [2023-12-16 20:01:14,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:14,321 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1478 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:14,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 4582 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-12-16 20:01:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1028. [2023-12-16 20:01:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.6134371957156768) internal successors, (1657), 1027 states have internal predecessors, (1657), 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) [2023-12-16 20:01:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1657 transitions. [2023-12-16 20:01:14,337 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1657 transitions. Word has length 356 [2023-12-16 20:01:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1657 transitions. [2023-12-16 20:01:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2023-12-16 20:01:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1657 transitions. [2023-12-16 20:01:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-16 20:01:14,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:14,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 20:01:14,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:14,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1298734087, now seen corresponding path program 1 times [2023-12-16 20:01:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:14,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333470834] [2023-12-16 20:01:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333470834] [2023-12-16 20:01:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333470834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168304177] [2023-12-16 20:01:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:15,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:15,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 20:01:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:16,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-16 20:01:16,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:17,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168304177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:17,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-16 20:01:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285411533] [2023-12-16 20:01:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 20:01:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 20:01:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-16 20:01:17,788 INFO L87 Difference]: Start difference. First operand 1028 states and 1657 transitions. Second operand has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 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) [2023-12-16 20:01:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:18,230 INFO L93 Difference]: Finished difference Result 4343 states and 7072 transitions. [2023-12-16 20:01:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 20:01:18,230 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 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 357 [2023-12-16 20:01:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:18,236 INFO L225 Difference]: With dead ends: 4343 [2023-12-16 20:01:18,236 INFO L226 Difference]: Without dead ends: 3616 [2023-12-16 20:01:18,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2023-12-16 20:01:18,238 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 6814 mSDsluCounter, 8065 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6814 SdHoareTripleChecker+Valid, 8841 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:18,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6814 Valid, 8841 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:01:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2023-12-16 20:01:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 1733. [2023-12-16 20:01:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.6021939953810624) internal successors, (2775), 1732 states have internal predecessors, (2775), 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) [2023-12-16 20:01:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2775 transitions. [2023-12-16 20:01:18,270 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2775 transitions. Word has length 357 [2023-12-16 20:01:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:18,271 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2775 transitions. [2023-12-16 20:01:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 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) [2023-12-16 20:01:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2775 transitions. [2023-12-16 20:01:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 20:01:18,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:18,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:18,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 20:01:18,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 20:01:18,483 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:18,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2093862362, now seen corresponding path program 1 times [2023-12-16 20:01:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:18,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399775533] [2023-12-16 20:01:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399775533] [2023-12-16 20:01:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399775533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716203595] [2023-12-16 20:01:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:19,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:19,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:19,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 20:01:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:20,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-16 20:01:20,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:20,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716203595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-16 20:01:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3310976] [2023-12-16 20:01:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 20:01:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 20:01:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-12-16 20:01:20,863 INFO L87 Difference]: Start difference. First operand 1733 states and 2775 transitions. Second operand has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 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) [2023-12-16 20:01:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:21,800 INFO L93 Difference]: Finished difference Result 7742 states and 12551 transitions. [2023-12-16 20:01:21,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 20:01:21,801 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 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 358 [2023-12-16 20:01:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:21,812 INFO L225 Difference]: With dead ends: 7742 [2023-12-16 20:01:21,812 INFO L226 Difference]: Without dead ends: 6412 [2023-12-16 20:01:21,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 20:01:21,817 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 16231 mSDsluCounter, 10261 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16231 SdHoareTripleChecker+Valid, 11295 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:21,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16231 Valid, 11295 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 20:01:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2023-12-16 20:01:21,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 1828. [2023-12-16 20:01:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 1.5900383141762453) internal successors, (2905), 1827 states have internal predecessors, (2905), 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) [2023-12-16 20:01:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2905 transitions. [2023-12-16 20:01:21,863 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2905 transitions. Word has length 358 [2023-12-16 20:01:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:21,863 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2905 transitions. [2023-12-16 20:01:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 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) [2023-12-16 20:01:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2905 transitions. [2023-12-16 20:01:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-16 20:01:21,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:21,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:21,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 20:01:22,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:22,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:22,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash -799358559, now seen corresponding path program 1 times [2023-12-16 20:01:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042205956] [2023-12-16 20:01:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:23,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042205956] [2023-12-16 20:01:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042205956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:23,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:23,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:01:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927239028] [2023-12-16 20:01:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:23,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:23,249 INFO L87 Difference]: Start difference. First operand 1828 states and 2905 transitions. Second operand has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 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) [2023-12-16 20:01:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:23,906 INFO L93 Difference]: Finished difference Result 5839 states and 9417 transitions. [2023-12-16 20:01:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 20:01:23,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 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 358 [2023-12-16 20:01:23,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:23,914 INFO L225 Difference]: With dead ends: 5839 [2023-12-16 20:01:23,914 INFO L226 Difference]: Without dead ends: 4643 [2023-12-16 20:01:23,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:01:23,917 INFO L413 NwaCegarLoop]: 2092 mSDtfsCounter, 3495 mSDsluCounter, 7362 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:23,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3495 Valid, 9454 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 20:01:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2023-12-16 20:01:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 2123. [2023-12-16 20:01:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.5763430725730443) internal successors, (3345), 2122 states have internal predecessors, (3345), 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) [2023-12-16 20:01:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3345 transitions. [2023-12-16 20:01:23,986 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3345 transitions. Word has length 358 [2023-12-16 20:01:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:23,986 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3345 transitions. [2023-12-16 20:01:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 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) [2023-12-16 20:01:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3345 transitions. [2023-12-16 20:01:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-16 20:01:23,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:23,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 20:01:23,992 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:23,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 130363208, now seen corresponding path program 1 times [2023-12-16 20:01:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115388049] [2023-12-16 20:01:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:25,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115388049] [2023-12-16 20:01:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115388049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:25,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:25,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:01:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836383486] [2023-12-16 20:01:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:01:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:01:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:01:25,482 INFO L87 Difference]: Start difference. First operand 2123 states and 3345 transitions. Second operand has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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) [2023-12-16 20:01:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:25,741 INFO L93 Difference]: Finished difference Result 7318 states and 11712 transitions. [2023-12-16 20:01:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:01:25,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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 359 [2023-12-16 20:01:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:25,752 INFO L225 Difference]: With dead ends: 7318 [2023-12-16 20:01:25,752 INFO L226 Difference]: Without dead ends: 5686 [2023-12-16 20:01:25,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 20:01:25,756 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 5850 mSDsluCounter, 5554 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5850 SdHoareTripleChecker+Valid, 7128 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:25,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5850 Valid, 7128 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2023-12-16 20:01:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 2135. [2023-12-16 20:01:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 1.5731021555763824) internal successors, (3357), 2134 states have internal predecessors, (3357), 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) [2023-12-16 20:01:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3357 transitions. [2023-12-16 20:01:25,800 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3357 transitions. Word has length 359 [2023-12-16 20:01:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:25,801 INFO L495 AbstractCegarLoop]: Abstraction has 2135 states and 3357 transitions. [2023-12-16 20:01:25,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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) [2023-12-16 20:01:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3357 transitions. [2023-12-16 20:01:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-16 20:01:25,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:25,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:25,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 20:01:25,806 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:25,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash -345162782, now seen corresponding path program 1 times [2023-12-16 20:01:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:25,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993591665] [2023-12-16 20:01:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993591665] [2023-12-16 20:01:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993591665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:26,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810938054] [2023-12-16 20:01:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:26,351 INFO L87 Difference]: Start difference. First operand 2135 states and 3357 transitions. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 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) [2023-12-16 20:01:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:26,418 INFO L93 Difference]: Finished difference Result 4716 states and 7526 transitions. [2023-12-16 20:01:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:01:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 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 359 [2023-12-16 20:01:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:26,423 INFO L225 Difference]: With dead ends: 4716 [2023-12-16 20:01:26,423 INFO L226 Difference]: Without dead ends: 3026 [2023-12-16 20:01:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:26,427 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 2993 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:26,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 2470 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-12-16 20:01:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2125. [2023-12-16 20:01:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.5682674199623352) internal successors, (3331), 2124 states have internal predecessors, (3331), 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) [2023-12-16 20:01:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3331 transitions. [2023-12-16 20:01:26,456 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3331 transitions. Word has length 359 [2023-12-16 20:01:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:26,456 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3331 transitions. [2023-12-16 20:01:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 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) [2023-12-16 20:01:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3331 transitions. [2023-12-16 20:01:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-16 20:01:26,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:26,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 20:01:26,460 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:26,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2059105796, now seen corresponding path program 1 times [2023-12-16 20:01:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240580624] [2023-12-16 20:01:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:27,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:27,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240580624] [2023-12-16 20:01:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240580624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426321989] [2023-12-16 20:01:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:27,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:27,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:27,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 20:01:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:28,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-16 20:01:28,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:29,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426321989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-16 20:01:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974391414] [2023-12-16 20:01:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:29,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 20:01:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 20:01:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-16 20:01:29,321 INFO L87 Difference]: Start difference. First operand 2125 states and 3331 transitions. Second operand has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 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) [2023-12-16 20:01:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:30,133 INFO L93 Difference]: Finished difference Result 6425 states and 10331 transitions. [2023-12-16 20:01:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 20:01:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 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 359 [2023-12-16 20:01:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:30,169 INFO L225 Difference]: With dead ends: 6425 [2023-12-16 20:01:30,169 INFO L226 Difference]: Without dead ends: 5132 [2023-12-16 20:01:30,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 20:01:30,174 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 9466 mSDsluCounter, 12947 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9466 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:30,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9466 Valid, 14252 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:01:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2023-12-16 20:01:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 2345. [2023-12-16 20:01:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2344 states have (on average 1.5601535836177474) internal successors, (3657), 2344 states have internal predecessors, (3657), 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) [2023-12-16 20:01:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3657 transitions. [2023-12-16 20:01:30,214 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3657 transitions. Word has length 359 [2023-12-16 20:01:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 3657 transitions. [2023-12-16 20:01:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 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) [2023-12-16 20:01:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3657 transitions. [2023-12-16 20:01:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-16 20:01:30,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:30,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:30,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:30,430 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:30,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 109099414, now seen corresponding path program 1 times [2023-12-16 20:01:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954258380] [2023-12-16 20:01:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954258380] [2023-12-16 20:01:31,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954258380] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:31,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418737335] [2023-12-16 20:01:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:31,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:31,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:31,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:31,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 20:01:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:32,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 20:01:32,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:32,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418737335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-12-16 20:01:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704942975] [2023-12-16 20:01:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:01:32,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:01:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-16 20:01:32,789 INFO L87 Difference]: Start difference. First operand 2345 states and 3657 transitions. Second operand has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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) [2023-12-16 20:01:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:32,969 INFO L93 Difference]: Finished difference Result 4769 states and 7614 transitions. [2023-12-16 20:01:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 20:01:32,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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 359 [2023-12-16 20:01:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:32,976 INFO L225 Difference]: With dead ends: 4769 [2023-12-16 20:01:32,976 INFO L226 Difference]: Without dead ends: 3595 [2023-12-16 20:01:32,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-12-16 20:01:32,978 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 3757 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 5345 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:32,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 5345 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-16 20:01:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 2425. [2023-12-16 20:01:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2424 states have (on average 1.561881188118812) internal successors, (3786), 2424 states have internal predecessors, (3786), 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) [2023-12-16 20:01:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3786 transitions. [2023-12-16 20:01:33,007 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3786 transitions. Word has length 359 [2023-12-16 20:01:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:33,007 INFO L495 AbstractCegarLoop]: Abstraction has 2425 states and 3786 transitions. [2023-12-16 20:01:33,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 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) [2023-12-16 20:01:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3786 transitions. [2023-12-16 20:01:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-16 20:01:33,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:33,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:33,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:33,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:33,221 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:33,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 878458154, now seen corresponding path program 1 times [2023-12-16 20:01:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:33,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242013221] [2023-12-16 20:01:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242013221] [2023-12-16 20:01:34,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242013221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388552876] [2023-12-16 20:01:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:34,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:34,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:01:34,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 20:01:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:34,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-16 20:01:34,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:36,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:01:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388552876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:36,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:01:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 21 [2023-12-16 20:01:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083234486] [2023-12-16 20:01:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 20:01:36,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 20:01:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-12-16 20:01:36,164 INFO L87 Difference]: Start difference. First operand 2425 states and 3786 transitions. Second operand has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 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) [2023-12-16 20:01:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:36,584 INFO L93 Difference]: Finished difference Result 5292 states and 8476 transitions. [2023-12-16 20:01:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 20:01:36,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 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 360 [2023-12-16 20:01:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:36,608 INFO L225 Difference]: With dead ends: 5292 [2023-12-16 20:01:36,609 INFO L226 Difference]: Without dead ends: 4118 [2023-12-16 20:01:36,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-12-16 20:01:36,611 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 5359 mSDsluCounter, 8919 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5359 SdHoareTripleChecker+Valid, 9871 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:36,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5359 Valid, 9871 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:01:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2023-12-16 20:01:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 2749. [2023-12-16 20:01:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2748 states have (on average 1.566957787481805) internal successors, (4306), 2748 states have internal predecessors, (4306), 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) [2023-12-16 20:01:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4306 transitions. [2023-12-16 20:01:36,682 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4306 transitions. Word has length 360 [2023-12-16 20:01:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:36,683 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 4306 transitions. [2023-12-16 20:01:36,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 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) [2023-12-16 20:01:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4306 transitions. [2023-12-16 20:01:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-16 20:01:36,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:36,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:36,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-16 20:01:36,904 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -508133326, now seen corresponding path program 1 times [2023-12-16 20:01:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553389983] [2023-12-16 20:01:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-16 20:01:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 20:01:37,673 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 20:01:37,675 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 20:01:37,685 INFO L158 Benchmark]: Toolchain (without parser) took 50276.64ms. Allocated memory was 235.9MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 192.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 848.5MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,685 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:01:37,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.25ms. Allocated memory is still 235.9MB. Free memory was 192.0MB in the beginning and 153.7MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 227.35ms. Allocated memory is still 235.9MB. Free memory was 153.7MB in the beginning and 159.8MB in the end (delta: -6.1MB). Peak memory consumption was 51.0MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,685 INFO L158 Benchmark]: Boogie Preprocessor took 299.15ms. Allocated memory is still 235.9MB. Free memory was 159.8MB in the beginning and 155.5MB in the end (delta: 4.3MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,686 INFO L158 Benchmark]: RCFGBuilder took 2199.47ms. Allocated memory was 235.9MB in the beginning and 374.3MB in the end (delta: 138.4MB). Free memory was 155.5MB in the beginning and 220.5MB in the end (delta: -65.0MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,686 INFO L158 Benchmark]: TraceAbstraction took 47054.91ms. Allocated memory was 374.3MB in the beginning and 1.3GB in the end (delta: 962.6MB). Free memory was 220.0MB in the beginning and 1.2GB in the end (delta: -974.2MB). Peak memory consumption was 737.1MB. Max. memory is 8.0GB. [2023-12-16 20:01:37,687 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 489.25ms. Allocated memory is still 235.9MB. Free memory was 192.0MB in the beginning and 153.7MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 227.35ms. Allocated memory is still 235.9MB. Free memory was 153.7MB in the beginning and 159.8MB in the end (delta: -6.1MB). Peak memory consumption was 51.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 299.15ms. Allocated memory is still 235.9MB. Free memory was 159.8MB in the beginning and 155.5MB in the end (delta: 4.3MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2199.47ms. Allocated memory was 235.9MB in the beginning and 374.3MB in the end (delta: 138.4MB). Free memory was 155.5MB in the beginning and 220.5MB in the end (delta: -65.0MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. * TraceAbstraction took 47054.91ms. Allocated memory was 374.3MB in the beginning and 1.3GB in the end (delta: 962.6MB). Free memory was 220.0MB in the beginning and 1.2GB in the end (delta: -974.2MB). Peak memory consumption was 737.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown