/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 16:57:49,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 16:57:50,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 16:57:50,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 16:57:50,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 16:57:50,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 16:57:50,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 16:57:50,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 16:57:50,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 16:57:50,067 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 16:57:50,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 16:57:50,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 16:57:50,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 16:57:50,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 16:57:50,070 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 16:57:50,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 16:57:50,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 16:57:50,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 16:57:50,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 16:57:50,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 16:57:50,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 16:57:50,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 16:57:50,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 16:57:50,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 16:57:50,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 16:57:50,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 16:57:50,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 16:57:50,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 16:57:50,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 16:57:50,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 16:57:50,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 16:57:50,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 16:57:50,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:57:50,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 16:57:50,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 16:57:50,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 16:57:50,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 16:57:50,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 16:57:50,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 16:57:50,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 16:57:50,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 16:57:50,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 16:57:50,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 16:57:50,078 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 16:57:50,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 16:57:50,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 16:57:50,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 16:57:50,281 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 16:57:50,281 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 16:57:50,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2023-12-20 16:57:51,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 16:57:51,606 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 16:57:51,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2023-12-20 16:57:51,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9560e8fe/0f78c8ea4d744bc8ad5753f7c394d7b3/FLAG756fd77d2 [2023-12-20 16:57:51,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9560e8fe/0f78c8ea4d744bc8ad5753f7c394d7b3 [2023-12-20 16:57:51,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 16:57:51,649 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 16:57:51,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 16:57:51,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 16:57:51,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 16:57:51,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:57:51" (1/1) ... [2023-12-20 16:57:51,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d05737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:51, skipping insertion in model container [2023-12-20 16:57:51,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:57:51" (1/1) ... [2023-12-20 16:57:51,760 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 16:57:51,992 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c[6050,6063] [2023-12-20 16:57:52,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:57:52,612 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 16:57:52,630 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c[6050,6063] [2023-12-20 16:57:53,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:57:53,039 INFO L206 MainTranslator]: Completed translation [2023-12-20 16:57:53,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53 WrapperNode [2023-12-20 16:57:53,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 16:57:53,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 16:57:53,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 16:57:53,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 16:57:53,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,443 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 16:57:53,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 16:57:53,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 16:57:53,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 16:57:53,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 16:57:53,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,710 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 16:57:53,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 16:57:53,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 16:57:53,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 16:57:53,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 16:57:53,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (1/1) ... [2023-12-20 16:57:53,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:57:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:57:53,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 16:57:54,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 16:57:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 16:57:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 16:57:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 16:57:54,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 16:57:54,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 16:57:54,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 16:57:57,779 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 16:57:57,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 16:57:57,861 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 16:57:57,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:57:57 BoogieIcfgContainer [2023-12-20 16:57:57,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 16:57:57,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 16:57:57,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 16:57:57,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 16:57:57,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:57:51" (1/3) ... [2023-12-20 16:57:57,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78711ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:57:57, skipping insertion in model container [2023-12-20 16:57:57,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:53" (2/3) ... [2023-12-20 16:57:57,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78711ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:57:57, skipping insertion in model container [2023-12-20 16:57:57,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:57:57" (3/3) ... [2023-12-20 16:57:57,866 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05.c [2023-12-20 16:57:57,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 16:57:57,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 16:57:57,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 16:57:57,928 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;@77db3004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 16:57:57,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 16:57:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 16:57:57,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:57,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:57,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:57,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1737928220, now seen corresponding path program 1 times [2023-12-20 16:57:57,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:57,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159327474] [2023-12-20 16:57:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:57:58,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:58,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159327474] [2023-12-20 16:57:58,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159327474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:58,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:58,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:58,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049011151] [2023-12-20 16:57:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:58,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 16:57:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 16:57:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 16:57:58,092 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:58,168 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 16:57:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 16:57:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 16:57:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:58,186 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 16:57:58,187 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 16:57:58,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 16:57:58,196 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:58,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 16:57:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 16:57:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 16:57:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 16:57:58,264 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 41 [2023-12-20 16:57:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:58,264 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 16:57:58,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 16:57:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 16:57:58,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:58,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:58,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 16:57:58,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:58,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 956339171, now seen corresponding path program 1 times [2023-12-20 16:57:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:58,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823645610] [2023-12-20 16:57:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:57:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823645610] [2023-12-20 16:57:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823645610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:58,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320261336] [2023-12-20 16:57:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:57:58,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:57:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:57:58,388 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:01,890 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-20 16:58:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:01,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 16:58:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:01,896 INFO L225 Difference]: With dead ends: 2931 [2023-12-20 16:58:01,896 INFO L226 Difference]: Without dead ends: 1898 [2023-12-20 16:58:01,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:01,898 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 973 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:01,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 16:58:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-20 16:58:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-20 16:58:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-20 16:58:01,932 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 41 [2023-12-20 16:58:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:01,932 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-20 16:58:01,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-20 16:58:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 16:58:01,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:01,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:58:01,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 16:58:01,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:01,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 958336121, now seen corresponding path program 1 times [2023-12-20 16:58:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406465122] [2023-12-20 16:58:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:02,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406465122] [2023-12-20 16:58:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406465122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:02,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518425083] [2023-12-20 16:58:02,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:02,179 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:05,396 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-20 16:58:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-20 16:58:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:05,409 INFO L225 Difference]: With dead ends: 5383 [2023-12-20 16:58:05,410 INFO L226 Difference]: Without dead ends: 3491 [2023-12-20 16:58:05,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:05,416 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:05,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 16:58:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-20 16:58:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-20 16:58:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-20 16:58:05,534 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 106 [2023-12-20 16:58:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:05,538 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-20 16:58:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-20 16:58:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 16:58:05,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:05,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:58:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 16:58:05,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:05,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash 703997812, now seen corresponding path program 1 times [2023-12-20 16:58:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204650788] [2023-12-20 16:58:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:05,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204650788] [2023-12-20 16:58:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204650788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:05,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:05,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:05,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182066310] [2023-12-20 16:58:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:05,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:05,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:05,679 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:08,707 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-20 16:58:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-20 16:58:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:08,724 INFO L225 Difference]: With dead ends: 10168 [2023-12-20 16:58:08,724 INFO L226 Difference]: Without dead ends: 6679 [2023-12-20 16:58:08,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:08,730 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:08,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:58:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-20 16:58:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-20 16:58:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-20 16:58:08,815 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 108 [2023-12-20 16:58:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-20 16:58:08,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-20 16:58:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 16:58:08,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:08,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:08,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 16:58:08,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:08,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 116180774, now seen corresponding path program 1 times [2023-12-20 16:58:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:08,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297068806] [2023-12-20 16:58:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:08,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:09,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297068806] [2023-12-20 16:58:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297068806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:09,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:09,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038376583] [2023-12-20 16:58:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:09,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:09,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:09,091 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:11,666 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-20 16:58:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-20 16:58:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:11,684 INFO L225 Difference]: With dead ends: 14122 [2023-12-20 16:58:11,685 INFO L226 Difference]: Without dead ends: 7455 [2023-12-20 16:58:11,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:11,694 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:11,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:58:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-20 16:58:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-20 16:58:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-20 16:58:11,788 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 152 [2023-12-20 16:58:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:11,789 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-20 16:58:11,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-20 16:58:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 16:58:11,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:11,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:11,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 16:58:11,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:11,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 535010620, now seen corresponding path program 1 times [2023-12-20 16:58:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507566049] [2023-12-20 16:58:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-20 16:58:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507566049] [2023-12-20 16:58:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507566049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592453788] [2023-12-20 16:58:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:11,887 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:14,880 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2023-12-20 16:58:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:14,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 [2023-12-20 16:58:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:14,921 INFO L225 Difference]: With dead ends: 19655 [2023-12-20 16:58:14,921 INFO L226 Difference]: Without dead ends: 12988 [2023-12-20 16:58:14,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:14,927 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:14,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1220 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:58:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2023-12-20 16:58:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2023-12-20 16:58:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.235929067077872) internal successors, (16030), 12970 states have internal predecessors, (16030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2023-12-20 16:58:15,093 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 166 [2023-12-20 16:58:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2023-12-20 16:58:15,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2023-12-20 16:58:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-20 16:58:15,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:15,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:15,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 16:58:15,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:15,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -994331320, now seen corresponding path program 1 times [2023-12-20 16:58:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:15,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247699812] [2023-12-20 16:58:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 16:58:15,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247699812] [2023-12-20 16:58:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247699812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078457450] [2023-12-20 16:58:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:15,400 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 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) [2023-12-20 16:58:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:18,035 INFO L93 Difference]: Finished difference Result 22791 states and 28650 transitions. [2023-12-20 16:58:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:18,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 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 253 [2023-12-20 16:58:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:18,067 INFO L225 Difference]: With dead ends: 22791 [2023-12-20 16:58:18,067 INFO L226 Difference]: Without dead ends: 12979 [2023-12-20 16:58:18,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:18,094 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:18,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:58:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2023-12-20 16:58:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12971. [2023-12-20 16:58:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.2347725520431765) internal successors, (16015), 12970 states have internal predecessors, (16015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16015 transitions. [2023-12-20 16:58:18,346 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16015 transitions. Word has length 253 [2023-12-20 16:58:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:18,346 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16015 transitions. [2023-12-20 16:58:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 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) [2023-12-20 16:58:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16015 transitions. [2023-12-20 16:58:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-20 16:58:18,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:18,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:18,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 16:58:18,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:18,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash 404091780, now seen corresponding path program 1 times [2023-12-20 16:58:18,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944005376] [2023-12-20 16:58:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:18,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944005376] [2023-12-20 16:58:18,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944005376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:18,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119824852] [2023-12-20 16:58:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:18,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:18,473 INFO L87 Difference]: Start difference. First operand 12971 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:21,429 INFO L93 Difference]: Finished difference Result 36165 states and 45133 transitions. [2023-12-20 16:58:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:21,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2023-12-20 16:58:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:21,469 INFO L225 Difference]: With dead ends: 36165 [2023-12-20 16:58:21,470 INFO L226 Difference]: Without dead ends: 23195 [2023-12-20 16:58:21,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:21,486 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 842 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1985 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 16:58:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2023-12-20 16:58:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 23190. [2023-12-20 16:58:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 23189 states have (on average 1.1870283323989823) internal successors, (27526), 23189 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 27526 transitions. [2023-12-20 16:58:21,699 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 27526 transitions. Word has length 255 [2023-12-20 16:58:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:21,699 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 27526 transitions. [2023-12-20 16:58:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 27526 transitions. [2023-12-20 16:58:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-20 16:58:21,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:21,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 16:58:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 16:58:21,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:21,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -39862253, now seen corresponding path program 1 times [2023-12-20 16:58:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097202425] [2023-12-20 16:58:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 16:58:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097202425] [2023-12-20 16:58:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097202425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033864061] [2023-12-20 16:58:21,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:21,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:21,824 INFO L87 Difference]: Start difference. First operand 23190 states and 27526 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:24,791 INFO L93 Difference]: Finished difference Result 56619 states and 68543 transitions. [2023-12-20 16:58:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 277 [2023-12-20 16:58:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:24,835 INFO L225 Difference]: With dead ends: 56619 [2023-12-20 16:58:24,835 INFO L226 Difference]: Without dead ends: 34217 [2023-12-20 16:58:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:24,864 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 883 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:24,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 924 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 16:58:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2023-12-20 16:58:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 33421. [2023-12-20 16:58:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33421 states, 33420 states have (on average 1.1724715739078395) internal successors, (39184), 33420 states have internal predecessors, (39184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33421 states to 33421 states and 39184 transitions. [2023-12-20 16:58:25,191 INFO L78 Accepts]: Start accepts. Automaton has 33421 states and 39184 transitions. Word has length 277 [2023-12-20 16:58:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:25,191 INFO L495 AbstractCegarLoop]: Abstraction has 33421 states and 39184 transitions. [2023-12-20 16:58:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 33421 states and 39184 transitions. [2023-12-20 16:58:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-20 16:58:25,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:25,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 16:58:25,194 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:25,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -18975104, now seen corresponding path program 1 times [2023-12-20 16:58:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595189531] [2023-12-20 16:58:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595189531] [2023-12-20 16:58:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595189531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:58:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754192730] [2023-12-20 16:58:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:26,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:58:26,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:26,159 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) [2023-12-20 16:58:26,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 16:58:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:26,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:58:26,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:58:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 16:58:26,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:58:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754192730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:26,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:58:26,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 16:58:26,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175849009] [2023-12-20 16:58:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:26,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:26,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:26,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:58:26,326 INFO L87 Difference]: Start difference. First operand 33421 states and 39184 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:28,897 INFO L93 Difference]: Finished difference Result 66052 states and 77574 transitions. [2023-12-20 16:58:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 282 [2023-12-20 16:58:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:28,933 INFO L225 Difference]: With dead ends: 66052 [2023-12-20 16:58:28,933 INFO L226 Difference]: Without dead ends: 33419 [2023-12-20 16:58:28,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:58:28,947 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1165 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:28,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1438 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:58:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2023-12-20 16:58:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 33418. [2023-12-20 16:58:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33418 states, 33417 states have (on average 1.1338540263937518) internal successors, (37890), 33417 states have internal predecessors, (37890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33418 states to 33418 states and 37890 transitions. [2023-12-20 16:58:29,233 INFO L78 Accepts]: Start accepts. Automaton has 33418 states and 37890 transitions. Word has length 282 [2023-12-20 16:58:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:29,234 INFO L495 AbstractCegarLoop]: Abstraction has 33418 states and 37890 transitions. [2023-12-20 16:58:29,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 33418 states and 37890 transitions. [2023-12-20 16:58:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-20 16:58:29,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:29,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:29,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 16:58:29,446 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,SelfDestructingSolverStorable9 [2023-12-20 16:58:29,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:29,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1753457091, now seen corresponding path program 1 times [2023-12-20 16:58:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822769584] [2023-12-20 16:58:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 16:58:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822769584] [2023-12-20 16:58:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822769584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742287512] [2023-12-20 16:58:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:29,614 INFO L87 Difference]: Start difference. First operand 33418 states and 37890 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:32,897 INFO L93 Difference]: Finished difference Result 77861 states and 89420 transitions. [2023-12-20 16:58:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 332 [2023-12-20 16:58:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:32,947 INFO L225 Difference]: With dead ends: 77861 [2023-12-20 16:58:32,948 INFO L226 Difference]: Without dead ends: 45231 [2023-12-20 16:58:32,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:32,969 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 821 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:32,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1942 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:58:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45231 states. [2023-12-20 16:58:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45231 to 44440. [2023-12-20 16:58:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44440 states, 44439 states have (on average 1.1160242129660884) internal successors, (49595), 44439 states have internal predecessors, (49595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44440 states to 44440 states and 49595 transitions. [2023-12-20 16:58:33,386 INFO L78 Accepts]: Start accepts. Automaton has 44440 states and 49595 transitions. Word has length 332 [2023-12-20 16:58:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:33,386 INFO L495 AbstractCegarLoop]: Abstraction has 44440 states and 49595 transitions. [2023-12-20 16:58:33,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 44440 states and 49595 transitions. [2023-12-20 16:58:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-20 16:58:33,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:33,392 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:33,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 16:58:33,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:33,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1405885060, now seen corresponding path program 1 times [2023-12-20 16:58:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:33,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210016105] [2023-12-20 16:58:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 208 proven. 113 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 16:58:34,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:34,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210016105] [2023-12-20 16:58:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210016105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:58:34,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853066491] [2023-12-20 16:58:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:34,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:58:34,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:34,405 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) [2023-12-20 16:58:34,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 16:58:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:34,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:58:34,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:58:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 16:58:34,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:58:34,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853066491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:34,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:58:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 16:58:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489776833] [2023-12-20 16:58:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:58:34,616 INFO L87 Difference]: Start difference. First operand 44440 states and 49595 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:37,294 INFO L93 Difference]: Finished difference Result 88083 states and 98389 transitions. [2023-12-20 16:58:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:37,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 347 [2023-12-20 16:58:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:37,337 INFO L225 Difference]: With dead ends: 88083 [2023-12-20 16:58:37,337 INFO L226 Difference]: Without dead ends: 44431 [2023-12-20 16:58:37,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:58:37,361 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1071 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:37,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 813 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:58:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44431 states. [2023-12-20 16:58:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44431 to 44430. [2023-12-20 16:58:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44430 states, 44429 states have (on average 1.0851921042562291) internal successors, (48214), 44429 states have internal predecessors, (48214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44430 states to 44430 states and 48214 transitions. [2023-12-20 16:58:37,858 INFO L78 Accepts]: Start accepts. Automaton has 44430 states and 48214 transitions. Word has length 347 [2023-12-20 16:58:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:37,864 INFO L495 AbstractCegarLoop]: Abstraction has 44430 states and 48214 transitions. [2023-12-20 16:58:37,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 44430 states and 48214 transitions. [2023-12-20 16:58:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-20 16:58:37,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:37,869 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-20 16:58:37,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 16:58:38,069 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,SelfDestructingSolverStorable11 [2023-12-20 16:58:38,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -309397663, now seen corresponding path program 1 times [2023-12-20 16:58:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560927336] [2023-12-20 16:58:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-20 16:58:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560927336] [2023-12-20 16:58:38,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560927336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:38,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:38,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:38,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108049778] [2023-12-20 16:58:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:38,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:38,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:38,427 INFO L87 Difference]: Start difference. First operand 44430 states and 48214 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:41,614 INFO L93 Difference]: Finished difference Result 89661 states and 98207 transitions. [2023-12-20 16:58:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 370 [2023-12-20 16:58:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:41,671 INFO L225 Difference]: With dead ends: 89661 [2023-12-20 16:58:41,671 INFO L226 Difference]: Without dead ends: 53110 [2023-12-20 16:58:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:41,698 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 950 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 663 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:58:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53110 states. [2023-12-20 16:58:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53110 to 44430. [2023-12-20 16:58:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44430 states, 44429 states have (on average 1.0851921042562291) internal successors, (48214), 44429 states have internal predecessors, (48214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44430 states to 44430 states and 48214 transitions. [2023-12-20 16:58:42,318 INFO L78 Accepts]: Start accepts. Automaton has 44430 states and 48214 transitions. Word has length 370 [2023-12-20 16:58:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:42,319 INFO L495 AbstractCegarLoop]: Abstraction has 44430 states and 48214 transitions. [2023-12-20 16:58:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 44430 states and 48214 transitions. [2023-12-20 16:58:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-20 16:58:42,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:42,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 16:58:42,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:42,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -735572728, now seen corresponding path program 1 times [2023-12-20 16:58:42,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:42,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060616684] [2023-12-20 16:58:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:42,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-20 16:58:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060616684] [2023-12-20 16:58:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060616684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690136954] [2023-12-20 16:58:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:42,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:42,645 INFO L87 Difference]: Start difference. First operand 44430 states and 48214 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:45,972 INFO L93 Difference]: Finished difference Result 99885 states and 109264 transitions. [2023-12-20 16:58:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 397 [2023-12-20 16:58:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:46,032 INFO L225 Difference]: With dead ends: 99885 [2023-12-20 16:58:46,033 INFO L226 Difference]: Without dead ends: 56243 [2023-12-20 16:58:46,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:46,052 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 926 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:46,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 752 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:58:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56243 states. [2023-12-20 16:58:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56243 to 54656. [2023-12-20 16:58:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54656 states, 54655 states have (on average 1.09053151587229) internal successors, (59603), 54655 states have internal predecessors, (59603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54656 states to 54656 states and 59603 transitions. [2023-12-20 16:58:46,570 INFO L78 Accepts]: Start accepts. Automaton has 54656 states and 59603 transitions. Word has length 397 [2023-12-20 16:58:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:46,571 INFO L495 AbstractCegarLoop]: Abstraction has 54656 states and 59603 transitions. [2023-12-20 16:58:46,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 54656 states and 59603 transitions. [2023-12-20 16:58:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-20 16:58:46,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:46,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:46,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 16:58:46,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:46,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1991467545, now seen corresponding path program 1 times [2023-12-20 16:58:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988575964] [2023-12-20 16:58:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-20 16:58:46,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988575964] [2023-12-20 16:58:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988575964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:46,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:46,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:46,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940391519] [2023-12-20 16:58:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:46,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:46,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:46,879 INFO L87 Difference]: Start difference. First operand 54656 states and 59603 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:49,915 INFO L93 Difference]: Finished difference Result 110101 states and 120005 transitions. [2023-12-20 16:58:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 430 [2023-12-20 16:58:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:49,970 INFO L225 Difference]: With dead ends: 110101 [2023-12-20 16:58:49,970 INFO L226 Difference]: Without dead ends: 56233 [2023-12-20 16:58:49,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:49,986 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 996 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:49,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1506 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:58:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56233 states. [2023-12-20 16:58:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56233 to 54648. [2023-12-20 16:58:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54648 states, 54647 states have (on average 1.0689699343056343) internal successors, (58416), 54647 states have internal predecessors, (58416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54648 states to 54648 states and 58416 transitions. [2023-12-20 16:58:50,501 INFO L78 Accepts]: Start accepts. Automaton has 54648 states and 58416 transitions. Word has length 430 [2023-12-20 16:58:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:50,502 INFO L495 AbstractCegarLoop]: Abstraction has 54648 states and 58416 transitions. [2023-12-20 16:58:50,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 54648 states and 58416 transitions. [2023-12-20 16:58:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-20 16:58:50,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:50,517 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:50,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 16:58:50,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 515737335, now seen corresponding path program 1 times [2023-12-20 16:58:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828891039] [2023-12-20 16:58:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 16:58:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828891039] [2023-12-20 16:58:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828891039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:50,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:50,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686266436] [2023-12-20 16:58:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:50,871 INFO L87 Difference]: Start difference. First operand 54648 states and 58416 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:53,666 INFO L93 Difference]: Finished difference Result 109309 states and 116854 transitions. [2023-12-20 16:58:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 510 [2023-12-20 16:58:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:53,718 INFO L225 Difference]: With dead ends: 109309 [2023-12-20 16:58:53,718 INFO L226 Difference]: Without dead ends: 54662 [2023-12-20 16:58:53,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:53,747 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 715 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:53,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1871 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:58:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54662 states. [2023-12-20 16:58:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54662 to 53860. [2023-12-20 16:58:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53860 states, 53859 states have (on average 1.0534543901669173) internal successors, (56738), 53859 states have internal predecessors, (56738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53860 states to 53860 states and 56738 transitions. [2023-12-20 16:58:54,304 INFO L78 Accepts]: Start accepts. Automaton has 53860 states and 56738 transitions. Word has length 510 [2023-12-20 16:58:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:54,305 INFO L495 AbstractCegarLoop]: Abstraction has 53860 states and 56738 transitions. [2023-12-20 16:58:54,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53860 states and 56738 transitions. [2023-12-20 16:58:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-20 16:58:54,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:54,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 16:58:54,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:54,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -381655943, now seen corresponding path program 1 times [2023-12-20 16:58:54,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:54,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929107779] [2023-12-20 16:58:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-20 16:58:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:54,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929107779] [2023-12-20 16:58:54,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929107779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515467255] [2023-12-20 16:58:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:54,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:54,704 INFO L87 Difference]: Start difference. First operand 53860 states and 56738 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:58,252 INFO L93 Difference]: Finished difference Result 155050 states and 163509 transitions. [2023-12-20 16:58:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 510 [2023-12-20 16:58:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:58,371 INFO L225 Difference]: With dead ends: 155050 [2023-12-20 16:58:58,372 INFO L226 Difference]: Without dead ends: 101978 [2023-12-20 16:58:58,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:58,414 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 831 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 761 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 16:58:58,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101978 states. [2023-12-20 16:58:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101978 to 99535. [2023-12-20 16:58:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99535 states, 99534 states have (on average 1.0502340908634236) internal successors, (104534), 99534 states have internal predecessors, (104534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99535 states to 99535 states and 104534 transitions. [2023-12-20 16:58:59,797 INFO L78 Accepts]: Start accepts. Automaton has 99535 states and 104534 transitions. Word has length 510 [2023-12-20 16:58:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 99535 states and 104534 transitions. [2023-12-20 16:58:59,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 99535 states and 104534 transitions. [2023-12-20 16:58:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-20 16:58:59,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:59,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:59,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 16:58:59,810 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:59,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2090512127, now seen corresponding path program 1 times [2023-12-20 16:58:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145285576] [2023-12-20 16:58:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:59,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 317 proven. 113 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 16:59:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145285576] [2023-12-20 16:59:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145285576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128650341] [2023-12-20 16:59:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:00,769 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) [2023-12-20 16:59:00,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 16:59:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:00,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 16:59:00,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-20 16:59:01,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128650341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:01,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:01,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-20 16:59:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139374722] [2023-12-20 16:59:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:01,495 INFO L87 Difference]: Start difference. First operand 99535 states and 104534 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:04,334 INFO L93 Difference]: Finished difference Result 189630 states and 199558 transitions. [2023-12-20 16:59:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 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 532 [2023-12-20 16:59:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:04,457 INFO L225 Difference]: With dead ends: 189630 [2023-12-20 16:59:04,457 INFO L226 Difference]: Without dead ends: 103477 [2023-12-20 16:59:04,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:04,496 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:04,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1143 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:59:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103477 states. [2023-12-20 16:59:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103477 to 101896. [2023-12-20 16:59:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101896 states, 101895 states have (on average 1.0455861425977722) internal successors, (106540), 101895 states have internal predecessors, (106540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101896 states to 101896 states and 106540 transitions. [2023-12-20 16:59:05,828 INFO L78 Accepts]: Start accepts. Automaton has 101896 states and 106540 transitions. Word has length 532 [2023-12-20 16:59:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:05,829 INFO L495 AbstractCegarLoop]: Abstraction has 101896 states and 106540 transitions. [2023-12-20 16:59:05,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 101896 states and 106540 transitions. [2023-12-20 16:59:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-12-20 16:59:05,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:05,848 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:05,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 16:59:06,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 16:59:06,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:06,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1892410553, now seen corresponding path program 1 times [2023-12-20 16:59:06,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:06,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529237710] [2023-12-20 16:59:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:06,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-20 16:59:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:06,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529237710] [2023-12-20 16:59:06,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529237710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:06,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567826313] [2023-12-20 16:59:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:59:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:59:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:59:06,388 INFO L87 Difference]: Start difference. First operand 101896 states and 106540 transitions. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:12,742 INFO L93 Difference]: Finished difference Result 300025 states and 314268 transitions. [2023-12-20 16:59:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:59:12,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 611 [2023-12-20 16:59:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:12,986 INFO L225 Difference]: With dead ends: 300025 [2023-12-20 16:59:12,986 INFO L226 Difference]: Without dead ends: 198917 [2023-12-20 16:59:13,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:59:13,057 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1696 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 7211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 992 IncrementalHoareTripleChecker+Valid, 6219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:13,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 745 Invalid, 7211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [992 Valid, 6219 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 16:59:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198917 states. [2023-12-20 16:59:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198917 to 195628. [2023-12-20 16:59:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195628 states, 195627 states have (on average 1.044656412458403) internal successors, (204363), 195627 states have internal predecessors, (204363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195628 states to 195628 states and 204363 transitions. [2023-12-20 16:59:15,473 INFO L78 Accepts]: Start accepts. Automaton has 195628 states and 204363 transitions. Word has length 611 [2023-12-20 16:59:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:15,474 INFO L495 AbstractCegarLoop]: Abstraction has 195628 states and 204363 transitions. [2023-12-20 16:59:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 195628 states and 204363 transitions. [2023-12-20 16:59:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-20 16:59:15,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:15,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:15,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 16:59:15,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:15,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1366731953, now seen corresponding path program 1 times [2023-12-20 16:59:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:15,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427106327] [2023-12-20 16:59:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 859 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-20 16:59:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427106327] [2023-12-20 16:59:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427106327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:16,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805426449] [2023-12-20 16:59:16,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:16,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:16,082 INFO L87 Difference]: Start difference. First operand 195628 states and 204363 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:19,280 INFO L93 Difference]: Finished difference Result 375533 states and 392797 transitions. [2023-12-20 16:59:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 665 [2023-12-20 16:59:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:19,517 INFO L225 Difference]: With dead ends: 375533 [2023-12-20 16:59:19,517 INFO L226 Difference]: Without dead ends: 195646 [2023-12-20 16:59:19,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:19,759 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 778 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1765 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:59:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195646 states. [2023-12-20 16:59:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195646 to 193265. [2023-12-20 16:59:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193265 states, 193264 states have (on average 1.0418184452355328) internal successors, (201346), 193264 states have internal predecessors, (201346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193265 states to 193265 states and 201346 transitions. [2023-12-20 16:59:22,125 INFO L78 Accepts]: Start accepts. Automaton has 193265 states and 201346 transitions. Word has length 665 [2023-12-20 16:59:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:22,126 INFO L495 AbstractCegarLoop]: Abstraction has 193265 states and 201346 transitions. [2023-12-20 16:59:22,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 193265 states and 201346 transitions. [2023-12-20 16:59:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-12-20 16:59:22,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:22,163 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 16:59:22,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash 700217679, now seen corresponding path program 1 times [2023-12-20 16:59:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816516032] [2023-12-20 16:59:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-20 16:59:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816516032] [2023-12-20 16:59:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816516032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163552753] [2023-12-20 16:59:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:22,679 INFO L87 Difference]: Start difference. First operand 193265 states and 201346 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:26,819 INFO L93 Difference]: Finished difference Result 436936 states and 456433 transitions. [2023-12-20 16:59:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 695 [2023-12-20 16:59:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:27,203 INFO L225 Difference]: With dead ends: 436936 [2023-12-20 16:59:27,204 INFO L226 Difference]: Without dead ends: 260990 [2023-12-20 16:59:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:27,311 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1019 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:27,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 595 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:59:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260990 states. [2023-12-20 16:59:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260990 to 260983. [2023-12-20 16:59:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260983 states, 260982 states have (on average 1.0393858580285231) internal successors, (271261), 260982 states have internal predecessors, (271261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260983 states to 260983 states and 271261 transitions. [2023-12-20 16:59:30,925 INFO L78 Accepts]: Start accepts. Automaton has 260983 states and 271261 transitions. Word has length 695 [2023-12-20 16:59:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:30,925 INFO L495 AbstractCegarLoop]: Abstraction has 260983 states and 271261 transitions. [2023-12-20 16:59:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 260983 states and 271261 transitions. [2023-12-20 16:59:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2023-12-20 16:59:30,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:30,979 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 16:59:30,980 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:30,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:30,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1802922598, now seen corresponding path program 1 times [2023-12-20 16:59:30,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997183013] [2023-12-20 16:59:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 969 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-20 16:59:31,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:31,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997183013] [2023-12-20 16:59:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997183013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:31,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:31,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028102064] [2023-12-20 16:59:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:31,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:31,717 INFO L87 Difference]: Start difference. First operand 260983 states and 271261 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:35,482 INFO L93 Difference]: Finished difference Result 519633 states and 540086 transitions. [2023-12-20 16:59:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 736 [2023-12-20 16:59:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:36,150 INFO L225 Difference]: With dead ends: 519633 [2023-12-20 16:59:36,151 INFO L226 Difference]: Without dead ends: 257860 [2023-12-20 16:59:36,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:36,249 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 771 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:36,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1769 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:59:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257860 states. [2023-12-20 16:59:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257860 to 249947. [2023-12-20 16:59:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249947 states, 249946 states have (on average 1.0337512902787003) internal successors, (258382), 249946 states have internal predecessors, (258382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249947 states to 249947 states and 258382 transitions. [2023-12-20 16:59:39,295 INFO L78 Accepts]: Start accepts. Automaton has 249947 states and 258382 transitions. Word has length 736 [2023-12-20 16:59:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:39,295 INFO L495 AbstractCegarLoop]: Abstraction has 249947 states and 258382 transitions. [2023-12-20 16:59:39,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 249947 states and 258382 transitions. [2023-12-20 16:59:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-12-20 16:59:39,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:39,314 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:39,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 16:59:39,314 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:39,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash 690906511, now seen corresponding path program 1 times [2023-12-20 16:59:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:39,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236289409] [2023-12-20 16:59:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2023-12-20 16:59:40,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236289409] [2023-12-20 16:59:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236289409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:40,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588754955] [2023-12-20 16:59:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:40,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:40,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:40,588 INFO L87 Difference]: Start difference. First operand 249947 states and 258382 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:44,468 INFO L93 Difference]: Finished difference Result 482538 states and 499345 transitions. [2023-12-20 16:59:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 757 [2023-12-20 16:59:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:44,805 INFO L225 Difference]: With dead ends: 482538 [2023-12-20 16:59:44,805 INFO L226 Difference]: Without dead ends: 249910 [2023-12-20 16:59:44,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:44,894 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 997 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:44,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 335 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:59:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249910 states. [2023-12-20 16:59:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249910 to 249910. [2023-12-20 16:59:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249910 states, 249909 states have (on average 1.0308072138258326) internal successors, (257608), 249909 states have internal predecessors, (257608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249910 states to 249910 states and 257608 transitions. [2023-12-20 16:59:48,046 INFO L78 Accepts]: Start accepts. Automaton has 249910 states and 257608 transitions. Word has length 757 [2023-12-20 16:59:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:48,046 INFO L495 AbstractCegarLoop]: Abstraction has 249910 states and 257608 transitions. [2023-12-20 16:59:48,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 249910 states and 257608 transitions. [2023-12-20 16:59:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-20 16:59:48,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:48,065 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:48,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 16:59:48,065 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:48,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:48,066 INFO L85 PathProgramCache]: Analyzing trace with hash 955580324, now seen corresponding path program 1 times [2023-12-20 16:59:48,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:48,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456059821] [2023-12-20 16:59:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:48,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 670 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-20 16:59:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456059821] [2023-12-20 16:59:48,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456059821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:48,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627776347] [2023-12-20 16:59:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:48,664 INFO L87 Difference]: Start difference. First operand 249910 states and 257608 transitions. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:52,906 INFO L93 Difference]: Finished difference Result 501417 states and 517440 transitions. [2023-12-20 16:59:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 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 764 [2023-12-20 16:59:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:53,282 INFO L225 Difference]: With dead ends: 501417 [2023-12-20 16:59:53,283 INFO L226 Difference]: Without dead ends: 268826 [2023-12-20 16:59:53,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:53,378 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 957 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:53,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 614 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 16:59:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268826 states. [2023-12-20 16:59:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268826 to 250697. [2023-12-20 16:59:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250697 states, 250696 states have (on average 1.0307823020710343) internal successors, (258413), 250696 states have internal predecessors, (258413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250697 states to 250697 states and 258413 transitions. [2023-12-20 16:59:56,900 INFO L78 Accepts]: Start accepts. Automaton has 250697 states and 258413 transitions. Word has length 764 [2023-12-20 16:59:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:56,900 INFO L495 AbstractCegarLoop]: Abstraction has 250697 states and 258413 transitions. [2023-12-20 16:59:56,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:56,900 INFO L276 IsEmpty]: Start isEmpty. Operand 250697 states and 258413 transitions. [2023-12-20 16:59:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-12-20 16:59:56,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:56,928 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 16:59:56,929 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:56,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1649886745, now seen corresponding path program 1 times [2023-12-20 16:59:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094343245] [2023-12-20 16:59:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-20 16:59:58,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:58,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094343245] [2023-12-20 16:59:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094343245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:58,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676131131] [2023-12-20 16:59:58,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:58,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:58,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:58,243 INFO L87 Difference]: Start difference. First operand 250697 states and 258413 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:02,696 INFO L93 Difference]: Finished difference Result 545550 states and 562619 transitions. [2023-12-20 17:00:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:02,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 790 [2023-12-20 17:00:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:03,157 INFO L225 Difference]: With dead ends: 545550 [2023-12-20 17:00:03,157 INFO L226 Difference]: Without dead ends: 312172 [2023-12-20 17:00:03,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:03,287 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 790 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:03,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1409 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:00:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312172 states. [2023-12-20 17:00:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312172 to 302660. [2023-12-20 17:00:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302660 states, 302659 states have (on average 1.0305128874409815) internal successors, (311894), 302659 states have internal predecessors, (311894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302660 states to 302660 states and 311894 transitions. [2023-12-20 17:00:07,422 INFO L78 Accepts]: Start accepts. Automaton has 302660 states and 311894 transitions. Word has length 790 [2023-12-20 17:00:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:07,422 INFO L495 AbstractCegarLoop]: Abstraction has 302660 states and 311894 transitions. [2023-12-20 17:00:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 302660 states and 311894 transitions. [2023-12-20 17:00:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-12-20 17:00:07,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:07,448 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:00:07,448 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:07,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 428744229, now seen corresponding path program 1 times [2023-12-20 17:00:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:07,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357682297] [2023-12-20 17:00:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 1070 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-20 17:00:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357682297] [2023-12-20 17:00:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357682297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:08,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:00:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371027679] [2023-12-20 17:00:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:00:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:00:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:00:08,547 INFO L87 Difference]: Start difference. First operand 302660 states and 311894 transitions. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:14,326 INFO L93 Difference]: Finished difference Result 630515 states and 650053 transitions. [2023-12-20 17:00:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:00:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 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 796 [2023-12-20 17:00:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:14,819 INFO L225 Difference]: With dead ends: 630515 [2023-12-20 17:00:14,820 INFO L226 Difference]: Without dead ends: 345174 [2023-12-20 17:00:15,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:00:15,268 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1692 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4584 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 4584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:15,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 609 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 4584 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-20 17:00:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345174 states. [2023-12-20 17:00:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345174 to 279827. [2023-12-20 17:00:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279827 states, 279826 states have (on average 1.0285963420125364) internal successors, (287828), 279826 states have internal predecessors, (287828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279827 states to 279827 states and 287828 transitions. [2023-12-20 17:00:19,072 INFO L78 Accepts]: Start accepts. Automaton has 279827 states and 287828 transitions. Word has length 796 [2023-12-20 17:00:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:19,072 INFO L495 AbstractCegarLoop]: Abstraction has 279827 states and 287828 transitions. [2023-12-20 17:00:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 279827 states and 287828 transitions. [2023-12-20 17:00:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2023-12-20 17:00:19,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:19,197 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:00:19,198 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:19,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 181197208, now seen corresponding path program 1 times [2023-12-20 17:00:19,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:19,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024335146] [2023-12-20 17:00:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2043 backedges. 1189 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-12-20 17:00:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024335146] [2023-12-20 17:00:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024335146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548766364] [2023-12-20 17:00:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:20,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:20,733 INFO L87 Difference]: Start difference. First operand 279827 states and 287828 transitions. Second operand has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:24,791 INFO L93 Difference]: Finished difference Result 569923 states and 586278 transitions. [2023-12-20 17:00:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 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 1269 [2023-12-20 17:00:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:25,475 INFO L225 Difference]: With dead ends: 569923 [2023-12-20 17:00:25,476 INFO L226 Difference]: Without dead ends: 293245 [2023-12-20 17:00:25,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:25,557 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 751 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:25,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 920 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:00:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293245 states. [2023-12-20 17:00:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293245 to 286123. [2023-12-20 17:00:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286123 states, 286122 states have (on average 1.028159316655133) internal successors, (294179), 286122 states have internal predecessors, (294179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286123 states to 286123 states and 294179 transitions. [2023-12-20 17:00:29,089 INFO L78 Accepts]: Start accepts. Automaton has 286123 states and 294179 transitions. Word has length 1269 [2023-12-20 17:00:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:29,090 INFO L495 AbstractCegarLoop]: Abstraction has 286123 states and 294179 transitions. [2023-12-20 17:00:29,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 286123 states and 294179 transitions. [2023-12-20 17:00:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2023-12-20 17:00:29,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:29,211 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:29,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:00:29,211 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:29,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2003681258, now seen corresponding path program 1 times [2023-12-20 17:00:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:29,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885088730] [2023-12-20 17:00:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 1167 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-20 17:00:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885088730] [2023-12-20 17:00:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885088730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:30,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786804427] [2023-12-20 17:00:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:30,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:30,337 INFO L87 Difference]: Start difference. First operand 286123 states and 294179 transitions. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:34,619 INFO L93 Difference]: Finished difference Result 575408 states and 591901 transitions. [2023-12-20 17:00:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 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 1274 [2023-12-20 17:00:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:35,051 INFO L225 Difference]: With dead ends: 575408 [2023-12-20 17:00:35,051 INFO L226 Difference]: Without dead ends: 302669 [2023-12-20 17:00:35,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:35,168 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 642 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1821 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:00:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302669 states.