/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.sw_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:54:46,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:54:46,994 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 19:54:46,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:54:46,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:54:47,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:54:47,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:54:47,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:54:47,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:54:47,024 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:54:47,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:54:47,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:54:47,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:54:47,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:54:47,026 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:54:47,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:54:47,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:54:47,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:54:47,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:54:47,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:54:47,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:54:47,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:54:47,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:54:47,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:54:47,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:54:47,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:54:47,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:54:47,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:54:47,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:54:47,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:54:47,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:54:47,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:54:47,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:54:47,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:54:47,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:54:47,256 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:54:47,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_loop.c [2023-12-16 19:54:48,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:54:48,815 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:54:48,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_loop.c [2023-12-16 19:54:48,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74837cc06/ee7d9336b22148f6b439b9afb308a1ff/FLAG2250e768c [2023-12-16 19:54:48,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74837cc06/ee7d9336b22148f6b439b9afb308a1ff [2023-12-16 19:54:48,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:54:48,866 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:54:48,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:54:48,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:54:48,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:54:48,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:48" (1/1) ... [2023-12-16 19:54:48,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2057f710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:48, skipping insertion in model container [2023-12-16 19:54:48,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:48" (1/1) ... [2023-12-16 19:54:48,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:54:49,138 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.sw_loop.c[1247,1260] [2023-12-16 19:54:49,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:54:49,340 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:54:49,348 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.sw_loop.c[1247,1260] [2023-12-16 19:54:49,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:54:49,407 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:54:49,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49 WrapperNode [2023-12-16 19:54:49,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:54:49,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:54:49,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:54:49,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:54:49,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,498 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1159 [2023-12-16 19:54:49,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:54:49,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:54:49,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:54:49,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:54:49,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,577 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 19:54:49,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:54:49,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:54:49,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:54:49,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:54:49,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (1/1) ... [2023-12-16 19:54:49,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:54:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:54:49,784 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 19:54:49,801 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 19:54:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:54:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:54:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:54:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:54:50,000 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:54:50,002 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:54:50,816 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:54:50,861 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:54:50,862 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:54:50,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:50 BoogieIcfgContainer [2023-12-16 19:54:50,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:54:50,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:54:50,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:54:50,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:54:50,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:54:48" (1/3) ... [2023-12-16 19:54:50,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a10978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:50, skipping insertion in model container [2023-12-16 19:54:50,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:49" (2/3) ... [2023-12-16 19:54:50,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a10978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:50, skipping insertion in model container [2023-12-16 19:54:50,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:50" (3/3) ... [2023-12-16 19:54:50,870 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop.c [2023-12-16 19:54:50,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:54:50,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:54:50,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:54:50,935 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;@657be290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:54:50,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:54:50,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 222 states have (on average 1.6666666666666667) internal successors, (370), 223 states have internal predecessors, (370), 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 19:54:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 19:54:50,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:50,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:50,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:50,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash 736873787, now seen corresponding path program 1 times [2023-12-16 19:54:50,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:50,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323173206] [2023-12-16 19:54:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:51,335 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 19:54:51,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:51,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323173206] [2023-12-16 19:54:51,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323173206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:51,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:51,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220407469] [2023-12-16 19:54:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:51,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:54:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:54:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:51,363 INFO L87 Difference]: Start difference. First operand has 224 states, 222 states have (on average 1.6666666666666667) internal successors, (370), 223 states have internal predecessors, (370), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:51,431 INFO L93 Difference]: Finished difference Result 420 states and 696 transitions. [2023-12-16 19:54:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:54:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-16 19:54:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:51,442 INFO L225 Difference]: With dead ends: 420 [2023-12-16 19:54:51,442 INFO L226 Difference]: Without dead ends: 224 [2023-12-16 19:54:51,446 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 19:54:51,449 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1084 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 19:54:51,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1084 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-16 19:54:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-12-16 19:54:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6502242152466369) internal successors, (368), 223 states have internal predecessors, (368), 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 19:54:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 368 transitions. [2023-12-16 19:54:51,483 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 368 transitions. Word has length 26 [2023-12-16 19:54:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:51,483 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 368 transitions. [2023-12-16 19:54:51,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 368 transitions. [2023-12-16 19:54:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 19:54:51,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:51,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:51,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:54:51,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:51,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1369975997, now seen corresponding path program 1 times [2023-12-16 19:54:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177769736] [2023-12-16 19:54:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:51,570 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 19:54:51,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:51,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177769736] [2023-12-16 19:54:51,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177769736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143071962] [2023-12-16 19:54:51,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:54:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:54:51,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:51,572 INFO L87 Difference]: Start difference. First operand 224 states and 368 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:51,595 INFO L93 Difference]: Finished difference Result 423 states and 694 transitions. [2023-12-16 19:54:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:54:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-16 19:54:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:51,596 INFO L225 Difference]: With dead ends: 423 [2023-12-16 19:54:51,597 INFO L226 Difference]: Without dead ends: 227 [2023-12-16 19:54:51,597 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 19:54:51,598 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1082 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 19:54:51,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1082 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-16 19:54:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2023-12-16 19:54:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.6444444444444444) internal successors, (370), 225 states have internal predecessors, (370), 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 19:54:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 370 transitions. [2023-12-16 19:54:51,606 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 370 transitions. Word has length 27 [2023-12-16 19:54:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:51,606 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 370 transitions. [2023-12-16 19:54:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 370 transitions. [2023-12-16 19:54:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 19:54:51,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:51,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:54:51,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1084157975, now seen corresponding path program 1 times [2023-12-16 19:54:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421416799] [2023-12-16 19:54:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:51,734 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 19:54:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421416799] [2023-12-16 19:54:51,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421416799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:51,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:51,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:51,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760606606] [2023-12-16 19:54:51,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:51,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:51,740 INFO L87 Difference]: Start difference. First operand 226 states and 370 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:51,813 INFO L93 Difference]: Finished difference Result 615 states and 1008 transitions. [2023-12-16 19:54:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-16 19:54:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:51,816 INFO L225 Difference]: With dead ends: 615 [2023-12-16 19:54:51,816 INFO L226 Difference]: Without dead ends: 417 [2023-12-16 19:54:51,818 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 19:54:51,820 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1283 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:51,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1064 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:51,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-16 19:54:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 228. [2023-12-16 19:54:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.6387665198237886) internal successors, (372), 227 states have internal predecessors, (372), 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 19:54:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 372 transitions. [2023-12-16 19:54:51,831 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 372 transitions. Word has length 28 [2023-12-16 19:54:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:51,831 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 372 transitions. [2023-12-16 19:54:51,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 372 transitions. [2023-12-16 19:54:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-16 19:54:51,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:51,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:54:51,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:51,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1609591974, now seen corresponding path program 1 times [2023-12-16 19:54:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:51,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850567489] [2023-12-16 19:54:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850567489] [2023-12-16 19:54:52,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850567489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:52,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:52,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:54:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287721328] [2023-12-16 19:54:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:52,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:54:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:54:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:54:52,795 INFO L87 Difference]: Start difference. First operand 228 states and 372 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 19:54:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:52,897 INFO L93 Difference]: Finished difference Result 813 states and 1331 transitions. [2023-12-16 19:54:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:54:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 157 [2023-12-16 19:54:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:52,900 INFO L225 Difference]: With dead ends: 813 [2023-12-16 19:54:52,900 INFO L226 Difference]: Without dead ends: 615 [2023-12-16 19:54:52,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:54:52,909 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1869 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:52,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 1458 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-16 19:54:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 249. [2023-12-16 19:54:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.6209677419354838) internal successors, (402), 248 states have internal predecessors, (402), 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 19:54:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 402 transitions. [2023-12-16 19:54:52,921 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 402 transitions. Word has length 157 [2023-12-16 19:54:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:52,921 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 402 transitions. [2023-12-16 19:54:52,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 19:54:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 402 transitions. [2023-12-16 19:54:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-16 19:54:52,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:52,923 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:52,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:54:52,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:52,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1816823998, now seen corresponding path program 1 times [2023-12-16 19:54:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:52,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110981746] [2023-12-16 19:54:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:52,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:53,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:53,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110981746] [2023-12-16 19:54:53,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110981746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:53,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:53,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056492678] [2023-12-16 19:54:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:53,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:53,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:53,753 INFO L87 Difference]: Start difference. First operand 249 states and 402 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 19:54:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:53,851 INFO L93 Difference]: Finished difference Result 665 states and 1083 transitions. [2023-12-16 19:54:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:53,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2023-12-16 19:54:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:53,856 INFO L225 Difference]: With dead ends: 665 [2023-12-16 19:54:53,856 INFO L226 Difference]: Without dead ends: 467 [2023-12-16 19:54:53,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:54:53,857 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1325 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:53,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1108 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-16 19:54:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 271. [2023-12-16 19:54:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.6185185185185185) internal successors, (437), 270 states have internal predecessors, (437), 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 19:54:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 437 transitions. [2023-12-16 19:54:53,865 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 437 transitions. Word has length 158 [2023-12-16 19:54:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:53,865 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 437 transitions. [2023-12-16 19:54:53,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 19:54:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 437 transitions. [2023-12-16 19:54:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-16 19:54:53,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:53,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:53,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:54:53,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:53,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash 615105036, now seen corresponding path program 1 times [2023-12-16 19:54:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375110153] [2023-12-16 19:54:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:53,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375110153] [2023-12-16 19:54:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375110153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600525162] [2023-12-16 19:54:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:54,855 INFO L87 Difference]: Start difference. First operand 271 states and 437 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 19:54:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:54,958 INFO L93 Difference]: Finished difference Result 746 states and 1216 transitions. [2023-12-16 19:54:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:54,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2023-12-16 19:54:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:54,962 INFO L225 Difference]: With dead ends: 746 [2023-12-16 19:54:54,962 INFO L226 Difference]: Without dead ends: 548 [2023-12-16 19:54:54,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:54:54,963 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1404 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:54,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1236 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-16 19:54:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 351. [2023-12-16 19:54:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.6257142857142857) internal successors, (569), 350 states have internal predecessors, (569), 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 19:54:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 569 transitions. [2023-12-16 19:54:54,973 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 569 transitions. Word has length 159 [2023-12-16 19:54:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:54,976 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 569 transitions. [2023-12-16 19:54:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 19:54:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 569 transitions. [2023-12-16 19:54:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-16 19:54:54,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:54,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:54,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:54:54,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:54,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:54,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1865728450, now seen corresponding path program 1 times [2023-12-16 19:54:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:54,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933318795] [2023-12-16 19:54:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933318795] [2023-12-16 19:54:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933318795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:55,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:55,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277883312] [2023-12-16 19:54:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:55,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:55,915 INFO L87 Difference]: Start difference. First operand 351 states and 569 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:54:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:56,017 INFO L93 Difference]: Finished difference Result 745 states and 1212 transitions. [2023-12-16 19:54:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2023-12-16 19:54:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:56,019 INFO L225 Difference]: With dead ends: 745 [2023-12-16 19:54:56,019 INFO L226 Difference]: Without dead ends: 506 [2023-12-16 19:54:56,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:54:56,021 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1359 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:56,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1168 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-16 19:54:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 351. [2023-12-16 19:54:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.6228571428571428) internal successors, (568), 350 states have internal predecessors, (568), 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 19:54:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 568 transitions. [2023-12-16 19:54:56,029 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 568 transitions. Word has length 160 [2023-12-16 19:54:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:56,029 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 568 transitions. [2023-12-16 19:54:56,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:54:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 568 transitions. [2023-12-16 19:54:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 19:54:56,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:56,030 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:56,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:54:56,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:56,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash -133105824, now seen corresponding path program 1 times [2023-12-16 19:54:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852898025] [2023-12-16 19:54:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:56,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852898025] [2023-12-16 19:54:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852898025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:56,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:56,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050053760] [2023-12-16 19:54:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:56,883 INFO L87 Difference]: Start difference. First operand 351 states and 568 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 19:54:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:56,977 INFO L93 Difference]: Finished difference Result 745 states and 1211 transitions. [2023-12-16 19:54:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 161 [2023-12-16 19:54:56,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:56,980 INFO L225 Difference]: With dead ends: 745 [2023-12-16 19:54:56,980 INFO L226 Difference]: Without dead ends: 527 [2023-12-16 19:54:56,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:54:56,981 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1377 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:56,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1201 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-16 19:54:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 351. [2023-12-16 19:54:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.62) internal successors, (567), 350 states have internal predecessors, (567), 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 19:54:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 567 transitions. [2023-12-16 19:54:56,988 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 567 transitions. Word has length 161 [2023-12-16 19:54:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:56,989 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 567 transitions. [2023-12-16 19:54:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 19:54:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 567 transitions. [2023-12-16 19:54:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 19:54:56,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:56,991 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:54:56,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1890499848, now seen corresponding path program 1 times [2023-12-16 19:54:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549000049] [2023-12-16 19:54:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549000049] [2023-12-16 19:54:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549000049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:54:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248973210] [2023-12-16 19:54:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:54:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:54:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:54:57,795 INFO L87 Difference]: Start difference. First operand 351 states and 567 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 19:54:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:57,946 INFO L93 Difference]: Finished difference Result 833 states and 1355 transitions. [2023-12-16 19:54:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:54:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 162 [2023-12-16 19:54:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:57,949 INFO L225 Difference]: With dead ends: 833 [2023-12-16 19:54:57,949 INFO L226 Difference]: Without dead ends: 618 [2023-12-16 19:54:57,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:54:57,951 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1213 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:57,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2693 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-16 19:54:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 353. [2023-12-16 19:54:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.6164772727272727) internal successors, (569), 352 states have internal predecessors, (569), 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 19:54:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 569 transitions. [2023-12-16 19:54:57,962 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 569 transitions. Word has length 162 [2023-12-16 19:54:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:57,962 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 569 transitions. [2023-12-16 19:54:57,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 19:54:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 569 transitions. [2023-12-16 19:54:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 19:54:57,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:57,963 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:54:57,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:57,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 17957942, now seen corresponding path program 1 times [2023-12-16 19:54:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:57,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076618994] [2023-12-16 19:54:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076618994] [2023-12-16 19:54:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076618994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:58,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:58,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:54:58,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237584965] [2023-12-16 19:54:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:58,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:54:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:54:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:54:58,823 INFO L87 Difference]: Start difference. First operand 353 states and 569 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 19:54:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:58,974 INFO L93 Difference]: Finished difference Result 818 states and 1331 transitions. [2023-12-16 19:54:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:54:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 162 [2023-12-16 19:54:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:58,977 INFO L225 Difference]: With dead ends: 818 [2023-12-16 19:54:58,977 INFO L226 Difference]: Without dead ends: 620 [2023-12-16 19:54:58,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:54:58,978 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1199 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:58,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 2764 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-16 19:54:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 356. [2023-12-16 19:54:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.6140845070422536) internal successors, (573), 355 states have internal predecessors, (573), 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 19:54:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 573 transitions. [2023-12-16 19:54:58,986 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 573 transitions. Word has length 162 [2023-12-16 19:54:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:58,986 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 573 transitions. [2023-12-16 19:54:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 19:54:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 573 transitions. [2023-12-16 19:54:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 19:54:58,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:58,988 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:54:58,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:54:58,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:58,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1404743352, now seen corresponding path program 1 times [2023-12-16 19:54:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527830488] [2023-12-16 19:54:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527830488] [2023-12-16 19:55:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527830488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826146450] [2023-12-16 19:55:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:00,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:00,004 INFO L87 Difference]: Start difference. First operand 356 states and 573 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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 19:55:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:00,113 INFO L93 Difference]: Finished difference Result 771 states and 1252 transitions. [2023-12-16 19:55:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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 162 [2023-12-16 19:55:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:00,117 INFO L225 Difference]: With dead ends: 771 [2023-12-16 19:55:00,117 INFO L226 Difference]: Without dead ends: 573 [2023-12-16 19:55:00,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:55:00,118 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1416 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:00,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1267 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-16 19:55:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 376. [2023-12-16 19:55:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.6133333333333333) internal successors, (605), 375 states have internal predecessors, (605), 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 19:55:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 605 transitions. [2023-12-16 19:55:00,127 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 605 transitions. Word has length 162 [2023-12-16 19:55:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 605 transitions. [2023-12-16 19:55:00,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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 19:55:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 605 transitions. [2023-12-16 19:55:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 19:55:00,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:00,129 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:00,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:55:00,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:00,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1806682464, now seen corresponding path program 1 times [2023-12-16 19:55:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66579136] [2023-12-16 19:55:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:00,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66579136] [2023-12-16 19:55:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66579136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:00,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:00,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:55:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520244324] [2023-12-16 19:55:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:00,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:55:00,928 INFO L87 Difference]: Start difference. First operand 376 states and 605 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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 19:55:01,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:01,063 INFO L93 Difference]: Finished difference Result 820 states and 1332 transitions. [2023-12-16 19:55:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:55:01,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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 163 [2023-12-16 19:55:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:01,065 INFO L225 Difference]: With dead ends: 820 [2023-12-16 19:55:01,065 INFO L226 Difference]: Without dead ends: 622 [2023-12-16 19:55:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:55:01,066 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1262 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:01,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 2182 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-16 19:55:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 379. [2023-12-16 19:55:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.6111111111111112) internal successors, (609), 378 states have internal predecessors, (609), 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 19:55:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 609 transitions. [2023-12-16 19:55:01,075 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 609 transitions. Word has length 163 [2023-12-16 19:55:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:01,076 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 609 transitions. [2023-12-16 19:55:01,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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 19:55:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 609 transitions. [2023-12-16 19:55:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 19:55:01,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:01,077 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:01,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:55:01,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:01,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2064638110, now seen corresponding path program 1 times [2023-12-16 19:55:01,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:01,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840261332] [2023-12-16 19:55:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:01,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840261332] [2023-12-16 19:55:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840261332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:01,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816445931] [2023-12-16 19:55:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:01,823 INFO L87 Difference]: Start difference. First operand 379 states and 609 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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 19:55:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:01,946 INFO L93 Difference]: Finished difference Result 794 states and 1288 transitions. [2023-12-16 19:55:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:01,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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 163 [2023-12-16 19:55:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:01,948 INFO L225 Difference]: With dead ends: 794 [2023-12-16 19:55:01,948 INFO L226 Difference]: Without dead ends: 596 [2023-12-16 19:55:01,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:55:01,949 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1434 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:01,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1300 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-16 19:55:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 399. [2023-12-16 19:55:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.6105527638190955) internal successors, (641), 398 states have internal predecessors, (641), 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 19:55:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 641 transitions. [2023-12-16 19:55:01,974 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 641 transitions. Word has length 163 [2023-12-16 19:55:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:01,974 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 641 transitions. [2023-12-16 19:55:01,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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 19:55:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 641 transitions. [2023-12-16 19:55:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 19:55:01,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:01,975 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 19:55:01,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:01,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash 732960320, now seen corresponding path program 1 times [2023-12-16 19:55:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420710993] [2023-12-16 19:55:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:02,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420710993] [2023-12-16 19:55:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420710993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:02,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:55:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064392515] [2023-12-16 19:55:02,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:02,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:55:02,662 INFO L87 Difference]: Start difference. First operand 399 states and 641 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 19:55:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:02,799 INFO L93 Difference]: Finished difference Result 822 states and 1333 transitions. [2023-12-16 19:55:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:55:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 164 [2023-12-16 19:55:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:02,802 INFO L225 Difference]: With dead ends: 822 [2023-12-16 19:55:02,802 INFO L226 Difference]: Without dead ends: 624 [2023-12-16 19:55:02,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:55:02,802 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1210 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:02,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2215 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-12-16 19:55:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 402. [2023-12-16 19:55:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.6084788029925188) internal successors, (645), 401 states have internal predecessors, (645), 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 19:55:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 645 transitions. [2023-12-16 19:55:02,812 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 645 transitions. Word has length 164 [2023-12-16 19:55:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:02,812 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 645 transitions. [2023-12-16 19:55:02,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 19:55:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 645 transitions. [2023-12-16 19:55:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 19:55:02,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:02,813 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:55:02,813 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:02,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1638778942, now seen corresponding path program 1 times [2023-12-16 19:55:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19833032] [2023-12-16 19:55:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19833032] [2023-12-16 19:55:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19833032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:03,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:03,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616917456] [2023-12-16 19:55:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:03,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:03,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:03,470 INFO L87 Difference]: Start difference. First operand 402 states and 645 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 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 19:55:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:03,573 INFO L93 Difference]: Finished difference Result 804 states and 1293 transitions. [2023-12-16 19:55:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:03,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 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 164 [2023-12-16 19:55:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:03,575 INFO L225 Difference]: With dead ends: 804 [2023-12-16 19:55:03,575 INFO L226 Difference]: Without dead ends: 514 [2023-12-16 19:55:03,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 19:55:03,577 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1346 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:03,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 1169 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-16 19:55:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 402. [2023-12-16 19:55:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.6059850374064837) internal successors, (644), 401 states have internal predecessors, (644), 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 19:55:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 644 transitions. [2023-12-16 19:55:03,585 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 644 transitions. Word has length 164 [2023-12-16 19:55:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 644 transitions. [2023-12-16 19:55:03,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 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 19:55:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 644 transitions. [2023-12-16 19:55:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 19:55:03,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:03,586 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:03,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 19:55:03,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:03,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2069912132, now seen corresponding path program 1 times [2023-12-16 19:55:03,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:03,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759561135] [2023-12-16 19:55:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:03,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759561135] [2023-12-16 19:55:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759561135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276314087] [2023-12-16 19:55:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:04,513 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 19:55:04,532 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 19:55:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:04,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 19:55:04,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:05,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:55:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276314087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:05,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:55:05,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-12-16 19:55:05,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471566130] [2023-12-16 19:55:05,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:05,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:55:05,011 INFO L87 Difference]: Start difference. First operand 402 states and 644 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 19:55:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:05,257 INFO L93 Difference]: Finished difference Result 775 states and 1245 transitions. [2023-12-16 19:55:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:55:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 164 [2023-12-16 19:55:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:05,258 INFO L225 Difference]: With dead ends: 775 [2023-12-16 19:55:05,259 INFO L226 Difference]: Without dead ends: 431 [2023-12-16 19:55:05,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-16 19:55:05,259 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1223 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1512 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:55:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-16 19:55:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 405. [2023-12-16 19:55:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.6014851485148516) internal successors, (647), 404 states have internal predecessors, (647), 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 19:55:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 647 transitions. [2023-12-16 19:55:05,267 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 647 transitions. Word has length 164 [2023-12-16 19:55:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:05,267 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 647 transitions. [2023-12-16 19:55:05,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 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 19:55:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 647 transitions. [2023-12-16 19:55:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 19:55:05,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:05,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:05,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 19:55:05,475 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,SelfDestructingSolverStorable15 [2023-12-16 19:55:05,476 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1320260110, now seen corresponding path program 1 times [2023-12-16 19:55:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:05,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292541977] [2023-12-16 19:55:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:06,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292541977] [2023-12-16 19:55:06,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292541977] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872283381] [2023-12-16 19:55:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:06,925 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 19:55:06,940 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 19:55:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:07,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-16 19:55:07,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:07,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:55:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872283381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:55:08,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:55:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 13] total 36 [2023-12-16 19:55:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096373459] [2023-12-16 19:55:08,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:55:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 19:55:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 19:55:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 19:55:08,440 INFO L87 Difference]: Start difference. First operand 405 states and 647 transitions. Second operand has 37 states, 37 states have (on average 9.837837837837839) internal successors, (364), 36 states have internal predecessors, (364), 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 19:55:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:10,410 INFO L93 Difference]: Finished difference Result 2477 states and 3920 transitions. [2023-12-16 19:55:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 19:55:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 9.837837837837839) internal successors, (364), 36 states have internal predecessors, (364), 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 165 [2023-12-16 19:55:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:10,418 INFO L225 Difference]: With dead ends: 2477 [2023-12-16 19:55:10,418 INFO L226 Difference]: Without dead ends: 2112 [2023-12-16 19:55:10,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 295 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1270, Invalid=4582, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 19:55:10,423 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 21447 mSDsluCounter, 6847 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21447 SdHoareTripleChecker+Valid, 7159 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:10,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21447 Valid, 7159 Invalid, 1360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:55:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2023-12-16 19:55:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 602. [2023-12-16 19:55:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.5856905158069883) internal successors, (953), 601 states have internal predecessors, (953), 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 19:55:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 953 transitions. [2023-12-16 19:55:10,440 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 953 transitions. Word has length 165 [2023-12-16 19:55:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:10,440 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 953 transitions. [2023-12-16 19:55:10,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.837837837837839) internal successors, (364), 36 states have internal predecessors, (364), 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 19:55:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 953 transitions. [2023-12-16 19:55:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 19:55:10,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:10,441 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:10,448 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 19:55:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 19:55:10,648 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:10,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2000628642, now seen corresponding path program 1 times [2023-12-16 19:55:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:10,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874715190] [2023-12-16 19:55:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874715190] [2023-12-16 19:55:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874715190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:11,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:55:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321558380] [2023-12-16 19:55:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:55:11,238 INFO L87 Difference]: Start difference. First operand 602 states and 953 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 19:55:11,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:11,358 INFO L93 Difference]: Finished difference Result 2095 states and 3325 transitions. [2023-12-16 19:55:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 19:55:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 166 [2023-12-16 19:55:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:11,362 INFO L225 Difference]: With dead ends: 2095 [2023-12-16 19:55:11,362 INFO L226 Difference]: Without dead ends: 1734 [2023-12-16 19:55:11,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:55:11,364 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1279 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:11,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2220 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-12-16 19:55:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 617. [2023-12-16 19:55:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.5795454545454546) internal successors, (973), 616 states have internal predecessors, (973), 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 19:55:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 973 transitions. [2023-12-16 19:55:11,381 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 973 transitions. Word has length 166 [2023-12-16 19:55:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:11,381 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 973 transitions. [2023-12-16 19:55:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 19:55:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 973 transitions. [2023-12-16 19:55:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 19:55:11,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:11,382 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 19:55:11,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash 901771384, now seen corresponding path program 1 times [2023-12-16 19:55:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224251843] [2023-12-16 19:55:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:11,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:11,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224251843] [2023-12-16 19:55:11,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224251843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:11,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:11,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:11,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717247007] [2023-12-16 19:55:11,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:11,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:11,719 INFO L87 Difference]: Start difference. First operand 617 states and 973 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 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 19:55:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:11,768 INFO L93 Difference]: Finished difference Result 1034 states and 1634 transitions. [2023-12-16 19:55:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:11,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 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 166 [2023-12-16 19:55:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:11,770 INFO L225 Difference]: With dead ends: 1034 [2023-12-16 19:55:11,770 INFO L226 Difference]: Without dead ends: 660 [2023-12-16 19:55:11,771 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 19:55:11,771 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1269 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:11,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1080 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-16 19:55:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 610. [2023-12-16 19:55:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.5763546798029557) internal successors, (960), 609 states have internal predecessors, (960), 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 19:55:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 960 transitions. [2023-12-16 19:55:11,783 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 960 transitions. Word has length 166 [2023-12-16 19:55:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:11,784 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 960 transitions. [2023-12-16 19:55:11,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 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 19:55:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 960 transitions. [2023-12-16 19:55:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 19:55:11,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:11,785 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 19:55:11,785 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:11,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1323661530, now seen corresponding path program 1 times [2023-12-16 19:55:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532547244] [2023-12-16 19:55:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532547244] [2023-12-16 19:55:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532547244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140867363] [2023-12-16 19:55:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:12,033 INFO L87 Difference]: Start difference. First operand 610 states and 960 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 19:55:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:12,085 INFO L93 Difference]: Finished difference Result 1217 states and 1916 transitions. [2023-12-16 19:55:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:12,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2023-12-16 19:55:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:12,087 INFO L225 Difference]: With dead ends: 1217 [2023-12-16 19:55:12,087 INFO L226 Difference]: Without dead ends: 652 [2023-12-16 19:55:12,087 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 19:55:12,088 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1257 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:12,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1074 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-12-16 19:55:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 608. [2023-12-16 19:55:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.57331136738056) internal successors, (955), 607 states have internal predecessors, (955), 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 19:55:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 955 transitions. [2023-12-16 19:55:12,102 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 955 transitions. Word has length 167 [2023-12-16 19:55:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:12,102 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 955 transitions. [2023-12-16 19:55:12,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 19:55:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 955 transitions. [2023-12-16 19:55:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 19:55:12,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:12,103 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 19:55:12,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 19:55:12,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:12,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash -581575424, now seen corresponding path program 1 times [2023-12-16 19:55:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:12,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325334254] [2023-12-16 19:55:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325334254] [2023-12-16 19:55:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325334254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884984807] [2023-12-16 19:55:12,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:12,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:55:12,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:55:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:12,339 INFO L87 Difference]: Start difference. First operand 608 states and 955 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 19:55:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:12,397 INFO L93 Difference]: Finished difference Result 1010 states and 1593 transitions. [2023-12-16 19:55:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2023-12-16 19:55:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:12,398 INFO L225 Difference]: With dead ends: 1010 [2023-12-16 19:55:12,398 INFO L226 Difference]: Without dead ends: 444 [2023-12-16 19:55:12,399 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 19:55:12,399 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1223 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:12,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1066 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-16 19:55:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 439. [2023-12-16 19:55:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.582191780821918) internal successors, (693), 438 states have internal predecessors, (693), 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 19:55:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2023-12-16 19:55:12,407 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 167 [2023-12-16 19:55:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:12,408 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2023-12-16 19:55:12,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 19:55:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2023-12-16 19:55:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-16 19:55:12,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:12,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:12,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 19:55:12,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:12,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1489340017, now seen corresponding path program 1 times [2023-12-16 19:55:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720334585] [2023-12-16 19:55:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:12,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720334585] [2023-12-16 19:55:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720334585] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:14,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468819343] [2023-12-16 19:55:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:14,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:14,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:14,694 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 19:55:14,703 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 19:55:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:15,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-16 19:55:15,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 122 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:15,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:55:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:16,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468819343] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:16,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:55:16,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 15] total 30 [2023-12-16 19:55:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140498352] [2023-12-16 19:55:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:16,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 19:55:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 19:55:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2023-12-16 19:55:16,401 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand has 9 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 states have internal predecessors, (294), 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 19:55:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:16,893 INFO L93 Difference]: Finished difference Result 1786 states and 2867 transitions. [2023-12-16 19:55:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 19:55:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 states have internal predecessors, (294), 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 294 [2023-12-16 19:55:16,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:16,898 INFO L225 Difference]: With dead ends: 1786 [2023-12-16 19:55:16,898 INFO L226 Difference]: Without dead ends: 1580 [2023-12-16 19:55:16,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 19:55:16,900 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 2005 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:16,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 4212 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:55:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2023-12-16 19:55:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 816. [2023-12-16 19:55:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 1.5914110429447852) internal successors, (1297), 815 states have internal predecessors, (1297), 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 19:55:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1297 transitions. [2023-12-16 19:55:16,922 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1297 transitions. Word has length 294 [2023-12-16 19:55:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:16,922 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1297 transitions. [2023-12-16 19:55:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 states have internal predecessors, (294), 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 19:55:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1297 transitions. [2023-12-16 19:55:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-16 19:55:16,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:16,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:16,934 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 19:55:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:17,134 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:17,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -741353587, now seen corresponding path program 1 times [2023-12-16 19:55:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:17,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85970378] [2023-12-16 19:55:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-16 19:55:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85970378] [2023-12-16 19:55:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85970378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:17,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:17,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:55:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486679683] [2023-12-16 19:55:17,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:17,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:55:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:55:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:55:17,717 INFO L87 Difference]: Start difference. First operand 816 states and 1297 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 5 states have internal predecessors, (185), 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 19:55:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:17,772 INFO L93 Difference]: Finished difference Result 1459 states and 2321 transitions. [2023-12-16 19:55:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:55:17,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 5 states have internal predecessors, (185), 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 294 [2023-12-16 19:55:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:17,775 INFO L225 Difference]: With dead ends: 1459 [2023-12-16 19:55:17,775 INFO L226 Difference]: Without dead ends: 690 [2023-12-16 19:55:17,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:55:17,776 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1226 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:17,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1367 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-12-16 19:55:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 640. [2023-12-16 19:55:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.591549295774648) internal successors, (1017), 639 states have internal predecessors, (1017), 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 19:55:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1017 transitions. [2023-12-16 19:55:17,790 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1017 transitions. Word has length 294 [2023-12-16 19:55:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:17,790 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1017 transitions. [2023-12-16 19:55:17,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 5 states have internal predecessors, (185), 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 19:55:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1017 transitions. [2023-12-16 19:55:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-16 19:55:17,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:17,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 19:55:17,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:17,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 812882623, now seen corresponding path program 1 times [2023-12-16 19:55:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988681382] [2023-12-16 19:55:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988681382] [2023-12-16 19:55:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988681382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:19,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153219765] [2023-12-16 19:55:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:19,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:19,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:19,984 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 19:55:20,009 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 19:55:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:20,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 19:55:20,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 19:55:20,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:55:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153219765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:20,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:55:20,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 18 [2023-12-16 19:55:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564646756] [2023-12-16 19:55:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 19:55:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 19:55:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:55:20,662 INFO L87 Difference]: Start difference. First operand 640 states and 1017 transitions. Second operand has 11 states, 11 states have (on average 26.272727272727273) internal successors, (289), 11 states have internal predecessors, (289), 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 19:55:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:21,091 INFO L93 Difference]: Finished difference Result 1508 states and 2414 transitions. [2023-12-16 19:55:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 19:55:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.272727272727273) internal successors, (289), 11 states have internal predecessors, (289), 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 295 [2023-12-16 19:55:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:21,095 INFO L225 Difference]: With dead ends: 1508 [2023-12-16 19:55:21,095 INFO L226 Difference]: Without dead ends: 1085 [2023-12-16 19:55:21,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-12-16 19:55:21,096 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 979 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:21,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 4334 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:55:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2023-12-16 19:55:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 655. [2023-12-16 19:55:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 1.5825688073394495) internal successors, (1035), 654 states have internal predecessors, (1035), 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 19:55:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1035 transitions. [2023-12-16 19:55:21,111 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1035 transitions. Word has length 295 [2023-12-16 19:55:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:21,112 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1035 transitions. [2023-12-16 19:55:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.272727272727273) internal successors, (289), 11 states have internal predecessors, (289), 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 19:55:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1035 transitions. [2023-12-16 19:55:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-16 19:55:21,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:21,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:21,123 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 19:55:21,322 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 19:55:21,323 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:21,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 137500127, now seen corresponding path program 1 times [2023-12-16 19:55:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:21,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137143692] [2023-12-16 19:55:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137143692] [2023-12-16 19:55:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137143692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719571523] [2023-12-16 19:55:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:24,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:24,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:24,089 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 19:55:24,113 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 19:55:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:24,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-16 19:55:24,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:25,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:55:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 95 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719571523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:55:27,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:55:27,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 38 [2023-12-16 19:55:27,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198940933] [2023-12-16 19:55:27,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:55:27,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 19:55:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 19:55:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 19:55:27,257 INFO L87 Difference]: Start difference. First operand 655 states and 1035 transitions. Second operand has 39 states, 39 states have (on average 20.205128205128204) internal successors, (788), 38 states have internal predecessors, (788), 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) Received shutdown request... [2023-12-16 19:55:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2023-12-16 19:55:41,134 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 19:55:41,134 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:55:41,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34051 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=9087, Invalid=71853, Unknown=0, NotChecked=0, Total=80940 [2023-12-16 19:55:41,140 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 17421 mSDsluCounter, 28779 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17421 SdHoareTripleChecker+Valid, 30015 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:41,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17421 Valid, 30015 Invalid, 4422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 4356 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 19:55:41,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:55:41,151 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 19:55:41,351 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 19:55:41,352 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (655states) and FLOYD_HOARE automaton (currently 248 states, 39 states before enhancement),while ReachableStatesComputation was computing reachable states (7756 states constructed, input type IntersectNwa). [2023-12-16 19:55:41,356 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:41,357 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:55:41,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:55:41 BoogieIcfgContainer [2023-12-16 19:55:41,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:55:41,359 INFO L158 Benchmark]: Toolchain (without parser) took 52493.10ms. Allocated memory was 242.2MB in the beginning and 1.1GB in the end (delta: 902.8MB). Free memory was 188.5MB in the beginning and 594.5MB in the end (delta: -406.0MB). Peak memory consumption was 497.3MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,359 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory was 131.8MB in the beginning and 131.6MB in the end (delta: 185.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:55:41,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.86ms. Allocated memory is still 242.2MB. Free memory was 188.0MB in the beginning and 163.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.31ms. Allocated memory is still 242.2MB. Free memory was 163.9MB in the beginning and 139.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,360 INFO L158 Benchmark]: Boogie Preprocessor took 223.90ms. Allocated memory is still 242.2MB. Free memory was 139.2MB in the beginning and 126.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,360 INFO L158 Benchmark]: RCFGBuilder took 1138.95ms. Allocated memory is still 242.2MB. Free memory was 126.0MB in the beginning and 83.9MB in the end (delta: 42.2MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,360 INFO L158 Benchmark]: TraceAbstraction took 50494.33ms. Allocated memory was 242.2MB in the beginning and 1.1GB in the end (delta: 902.8MB). Free memory was 83.3MB in the beginning and 594.5MB in the end (delta: -511.1MB). Peak memory consumption was 391.2MB. Max. memory is 8.0GB. [2023-12-16 19:55:41,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory was 131.8MB in the beginning and 131.6MB in the end (delta: 185.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 540.86ms. Allocated memory is still 242.2MB. Free memory was 188.0MB in the beginning and 163.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.31ms. Allocated memory is still 242.2MB. Free memory was 163.9MB in the beginning and 139.2MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 223.90ms. Allocated memory is still 242.2MB. Free memory was 139.2MB in the beginning and 126.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1138.95ms. Allocated memory is still 242.2MB. Free memory was 126.0MB in the beginning and 83.9MB in the end (delta: 42.2MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. * TraceAbstraction took 50494.33ms. Allocated memory was 242.2MB in the beginning and 1.1GB in the end (delta: 902.8MB). Free memory was 83.3MB in the beginning and 594.5MB in the end (delta: -511.1MB). Peak memory consumption was 391.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (655states) and FLOYD_HOARE automaton (currently 248 states, 39 states before enhancement),while ReachableStatesComputation was computing reachable states (7756 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.4s, OverallIterations: 25, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67028 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67028 mSDsluCounter, 77030 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64467 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8139 IncrementalHoareTripleChecker+Invalid, 8247 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 12563 mSDtfsCounter, 8139 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2489 GetRequests, 1905 SyntacticMatches, 8 SemanticMatches, 576 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36404 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=816occurred in iteration=22, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 6776 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 9.1s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 5402 NumberOfCodeBlocks, 5402 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 6123 ConstructedInterpolants, 0 QuantifiedInterpolants, 37615 SizeOfPredicates, 105 NumberOfNonLiveVariables, 8223 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 33 InterpolantComputations, 23 PerfectInterpolantSequences, 1273/1398 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown