/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 15:09:51,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 15:09:51,169 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 15:09:51,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 15:09:51,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 15:09:51,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 15:09:51,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 15:09:51,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 15:09:51,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 15:09:51,193 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 15:09:51,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 15:09:51,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 15:09:51,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 15:09:51,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 15:09:51,195 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 15:09:51,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 15:09:51,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 15:09:51,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 15:09:51,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 15:09:51,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 15:09:51,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 15:09:51,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 15:09:51,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 15:09:51,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 15:09:51,198 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 15:09:51,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 15:09:51,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 15:09:51,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 15:09:51,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 15:09:51,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:09:51,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 15:09:51,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 15:09:51,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 15:09:51,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 15:09:51,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 15:09:51,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 15:09:51,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 15:09:51,202 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 15:09:51,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 15:09:51,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 15:09:51,203 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 15:09:51,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 15:09:51,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 15:09:51,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 15:09:51,411 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 15:09:51,411 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 15:09:51,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c [2023-12-25 15:09:52,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 15:09:52,940 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 15:09:52,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c [2023-12-25 15:09:52,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81b9227a/692cb0253b4d482faaa70e7630a617e1/FLAG9781c30ff [2023-12-25 15:09:52,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e81b9227a/692cb0253b4d482faaa70e7630a617e1 [2023-12-25 15:09:52,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 15:09:52,987 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 15:09:52,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 15:09:52,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 15:09:52,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 15:09:52,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:09:52" (1/1) ... [2023-12-25 15:09:52,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10652cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:52, skipping insertion in model container [2023-12-25 15:09:52,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 03:09:52" (1/1) ... [2023-12-25 15:09:53,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 15:09:53,258 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c[1261,1274] [2023-12-25 15:09:53,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:09:53,736 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 15:09:53,746 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cache_coherence_three.c[1261,1274] [2023-12-25 15:09:53,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 15:09:53,938 INFO L206 MainTranslator]: Completed translation [2023-12-25 15:09:53,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53 WrapperNode [2023-12-25 15:09:53,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 15:09:53,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 15:09:53,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 15:09:53,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 15:09:53,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,604 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6461 [2023-12-25 15:09:54,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 15:09:54,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 15:09:54,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 15:09:54,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 15:09:54,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,972 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]. [2023-12-25 15:09:54,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:54,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 15:09:55,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 15:09:55,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 15:09:55,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 15:09:55,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (1/1) ... [2023-12-25 15:09:55,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 15:09:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:09:55,391 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) [2023-12-25 15:09:55,395 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 [2023-12-25 15:09:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 15:09:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 15:09:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 15:09:55,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 15:09:55,891 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 15:09:55,893 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 15:09:59,117 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 15:09:59,258 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 15:09:59,258 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 15:09:59,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:09:59 BoogieIcfgContainer [2023-12-25 15:09:59,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 15:09:59,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 15:09:59,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 15:09:59,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 15:09:59,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 03:09:52" (1/3) ... [2023-12-25 15:09:59,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:09:59, skipping insertion in model container [2023-12-25 15:09:59,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 03:09:53" (2/3) ... [2023-12-25 15:09:59,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 03:09:59, skipping insertion in model container [2023-12-25 15:09:59,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 03:09:59" (3/3) ... [2023-12-25 15:09:59,270 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cache_coherence_three.c [2023-12-25 15:09:59,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 15:09:59,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 15:09:59,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 15:09:59,363 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;@138d3ca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 15:09:59,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 15:09:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 1046 states, 1044 states have (on average 1.6666666666666667) internal successors, (1740), 1045 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:09:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-25 15:09:59,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:09:59,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:09:59,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:09:59,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:09:59,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1867867744, now seen corresponding path program 1 times [2023-12-25 15:09:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:09:59,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602706715] [2023-12-25 15:09:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:09:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:09:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602706715] [2023-12-25 15:10:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602706715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:00,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027455975] [2023-12-25 15:10:00,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:00,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:10:00,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:10:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:00,574 INFO L87 Difference]: Start difference. First operand has 1046 states, 1044 states have (on average 1.6666666666666667) internal successors, (1740), 1045 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:00,705 INFO L93 Difference]: Finished difference Result 1965 states and 3271 transitions. [2023-12-25 15:10:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:10:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-12-25 15:10:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:00,728 INFO L225 Difference]: With dead ends: 1965 [2023-12-25 15:10:00,729 INFO L226 Difference]: Without dead ends: 1046 [2023-12-25 15:10:00,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:00,740 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 1 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:00,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5194 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:10:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-12-25 15:10:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2023-12-25 15:10:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.6631578947368422) internal successors, (1738), 1045 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1738 transitions. [2023-12-25 15:10:00,835 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1738 transitions. Word has length 126 [2023-12-25 15:10:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:00,836 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1738 transitions. [2023-12-25 15:10:00,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1738 transitions. [2023-12-25 15:10:00,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-25 15:10:00,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:00,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 15:10:00,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:00,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2067599536, now seen corresponding path program 1 times [2023-12-25 15:10:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930798057] [2023-12-25 15:10:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930798057] [2023-12-25 15:10:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930798057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105288473] [2023-12-25 15:10:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:10:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:10:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:01,315 INFO L87 Difference]: Start difference. First operand 1046 states and 1738 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:01,395 INFO L93 Difference]: Finished difference Result 1968 states and 3269 transitions. [2023-12-25 15:10:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:10:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-25 15:10:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:01,401 INFO L225 Difference]: With dead ends: 1968 [2023-12-25 15:10:01,402 INFO L226 Difference]: Without dead ends: 1049 [2023-12-25 15:10:01,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:01,405 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 1 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:01,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5192 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:10:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-12-25 15:10:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1048. [2023-12-25 15:10:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.66189111747851) internal successors, (1740), 1047 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1740 transitions. [2023-12-25 15:10:01,430 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1740 transitions. Word has length 127 [2023-12-25 15:10:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:01,432 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1740 transitions. [2023-12-25 15:10:01,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1740 transitions. [2023-12-25 15:10:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 15:10:01,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:01,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:01,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 15:10:01,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash 118492090, now seen corresponding path program 1 times [2023-12-25 15:10:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919931911] [2023-12-25 15:10:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:02,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919931911] [2023-12-25 15:10:02,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919931911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:02,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:02,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:02,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008244835] [2023-12-25 15:10:02,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:02,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:02,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:02,114 INFO L87 Difference]: Start difference. First operand 1048 states and 1740 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 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) [2023-12-25 15:10:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:02,573 INFO L93 Difference]: Finished difference Result 2890 states and 4798 transitions. [2023-12-25 15:10:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 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 128 [2023-12-25 15:10:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:02,581 INFO L225 Difference]: With dead ends: 2890 [2023-12-25 15:10:02,582 INFO L226 Difference]: Without dead ends: 1969 [2023-12-25 15:10:02,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:02,586 INFO L413 NwaCegarLoop]: 1795 mSDtfsCounter, 4576 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4576 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:02,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4576 Valid, 5292 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:10:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2023-12-25 15:10:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1051. [2023-12-25 15:10:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.66) internal successors, (1743), 1050 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1743 transitions. [2023-12-25 15:10:02,615 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1743 transitions. Word has length 128 [2023-12-25 15:10:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:02,616 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1743 transitions. [2023-12-25 15:10:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 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) [2023-12-25 15:10:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1743 transitions. [2023-12-25 15:10:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 15:10:02,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:02,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 15:10:02,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:02,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1893499452, now seen corresponding path program 1 times [2023-12-25 15:10:02,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:02,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792095574] [2023-12-25 15:10:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:03,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792095574] [2023-12-25 15:10:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792095574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:03,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:03,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879294795] [2023-12-25 15:10:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:03,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:10:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:10:03,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:03,318 INFO L87 Difference]: Start difference. First operand 1051 states and 1743 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 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) [2023-12-25 15:10:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:03,384 INFO L93 Difference]: Finished difference Result 1982 states and 3286 transitions. [2023-12-25 15:10:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:10:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 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 128 [2023-12-25 15:10:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:03,389 INFO L225 Difference]: With dead ends: 1982 [2023-12-25 15:10:03,389 INFO L226 Difference]: Without dead ends: 1058 [2023-12-25 15:10:03,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:03,399 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 3045 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:03,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 2175 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:10:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-25 15:10:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1051. [2023-12-25 15:10:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.659047619047619) internal successors, (1742), 1050 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1742 transitions. [2023-12-25 15:10:03,420 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1742 transitions. Word has length 128 [2023-12-25 15:10:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:03,420 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1742 transitions. [2023-12-25 15:10:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 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) [2023-12-25 15:10:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1742 transitions. [2023-12-25 15:10:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 15:10:03,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:03,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:03,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 15:10:03,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:03,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1855624628, now seen corresponding path program 1 times [2023-12-25 15:10:03,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:03,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037986150] [2023-12-25 15:10:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:03,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037986150] [2023-12-25 15:10:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037986150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:04,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:04,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430620436] [2023-12-25 15:10:04,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:04,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:10:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:10:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:04,005 INFO L87 Difference]: Start difference. First operand 1051 states and 1742 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:04,070 INFO L93 Difference]: Finished difference Result 2015 states and 3338 transitions. [2023-12-25 15:10:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:10:04,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-12-25 15:10:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:04,075 INFO L225 Difference]: With dead ends: 2015 [2023-12-25 15:10:04,075 INFO L226 Difference]: Without dead ends: 1091 [2023-12-25 15:10:04,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:04,077 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 3043 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:04,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 2336 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:10:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-12-25 15:10:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2023-12-25 15:10:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.658095238095238) internal successors, (1741), 1050 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1741 transitions. [2023-12-25 15:10:04,095 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1741 transitions. Word has length 129 [2023-12-25 15:10:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:04,095 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1741 transitions. [2023-12-25 15:10:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1741 transitions. [2023-12-25 15:10:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 15:10:04,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:04,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:04,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 15:10:04,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:04,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash -223479142, now seen corresponding path program 1 times [2023-12-25 15:10:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858612015] [2023-12-25 15:10:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:04,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858612015] [2023-12-25 15:10:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858612015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:04,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:04,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692350794] [2023-12-25 15:10:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:04,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:10:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:10:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:10:04,732 INFO L87 Difference]: Start difference. First operand 1051 states and 1741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:04,793 INFO L93 Difference]: Finished difference Result 1997 states and 3306 transitions. [2023-12-25 15:10:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:10:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-25 15:10:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:04,797 INFO L225 Difference]: With dead ends: 1997 [2023-12-25 15:10:04,797 INFO L226 Difference]: Without dead ends: 1073 [2023-12-25 15:10:04,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:04,801 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 3041 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:04,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 2245 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:10:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-12-25 15:10:04,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1051. [2023-12-25 15:10:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.6571428571428573) internal successors, (1740), 1050 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1740 transitions. [2023-12-25 15:10:04,823 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1740 transitions. Word has length 130 [2023-12-25 15:10:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:04,824 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1740 transitions. [2023-12-25 15:10:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1740 transitions. [2023-12-25 15:10:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 15:10:04,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:04,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 15:10:04,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:04,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash -152890838, now seen corresponding path program 1 times [2023-12-25 15:10:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230035853] [2023-12-25 15:10:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:05,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230035853] [2023-12-25 15:10:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230035853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:05,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:10:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417217777] [2023-12-25 15:10:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 15:10:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 15:10:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:10:05,723 INFO L87 Difference]: Start difference. First operand 1051 states and 1740 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:06,623 INFO L93 Difference]: Finished difference Result 3838 states and 6348 transitions. [2023-12-25 15:10:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:10:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-25 15:10:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:06,632 INFO L225 Difference]: With dead ends: 3838 [2023-12-25 15:10:06,632 INFO L226 Difference]: Without dead ends: 2914 [2023-12-25 15:10:06,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-25 15:10:06,634 INFO L413 NwaCegarLoop]: 3170 mSDtfsCounter, 9267 mSDsluCounter, 9941 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9267 SdHoareTripleChecker+Valid, 13111 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:06,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9267 Valid, 13111 Invalid, 390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:10:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2023-12-25 15:10:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1055. [2023-12-25 15:10:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 1.6555977229601517) internal successors, (1745), 1054 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1745 transitions. [2023-12-25 15:10:06,665 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1745 transitions. Word has length 131 [2023-12-25 15:10:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:06,665 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1745 transitions. [2023-12-25 15:10:06,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:06,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1745 transitions. [2023-12-25 15:10:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 15:10:06,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:06,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 15:10:06,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:06,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1524698136, now seen corresponding path program 1 times [2023-12-25 15:10:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321738237] [2023-12-25 15:10:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321738237] [2023-12-25 15:10:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321738237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:07,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:07,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:10:07,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487850941] [2023-12-25 15:10:07,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:07,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:07,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:07,398 INFO L87 Difference]: Start difference. First operand 1055 states and 1745 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:07,726 INFO L93 Difference]: Finished difference Result 2963 states and 4894 transitions. [2023-12-25 15:10:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:10:07,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-25 15:10:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:07,734 INFO L225 Difference]: With dead ends: 2963 [2023-12-25 15:10:07,734 INFO L226 Difference]: Without dead ends: 2035 [2023-12-25 15:10:07,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:10:07,736 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 6102 mSDsluCounter, 7417 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6102 SdHoareTripleChecker+Valid, 10715 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:07,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6102 Valid, 10715 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-12-25 15:10:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1060. [2023-12-25 15:10:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.6543909348441925) internal successors, (1752), 1059 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1752 transitions. [2023-12-25 15:10:07,765 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1752 transitions. Word has length 131 [2023-12-25 15:10:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:07,765 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1752 transitions. [2023-12-25 15:10:07,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1752 transitions. [2023-12-25 15:10:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 15:10:07,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:07,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:07,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 15:10:07,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:07,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1749200806, now seen corresponding path program 1 times [2023-12-25 15:10:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:07,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595092249] [2023-12-25 15:10:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:07,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:08,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595092249] [2023-12-25 15:10:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595092249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:08,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:08,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030484446] [2023-12-25 15:10:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:08,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:08,398 INFO L87 Difference]: Start difference. First operand 1060 states and 1752 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:08,684 INFO L93 Difference]: Finished difference Result 2928 states and 4836 transitions. [2023-12-25 15:10:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-25 15:10:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:08,690 INFO L225 Difference]: With dead ends: 2928 [2023-12-25 15:10:08,690 INFO L226 Difference]: Without dead ends: 1995 [2023-12-25 15:10:08,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:08,693 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 4639 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 5119 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:08,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 5119 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 15:10:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-25 15:10:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1063. [2023-12-25 15:10:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.652542372881356) internal successors, (1755), 1062 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1755 transitions. [2023-12-25 15:10:08,716 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1755 transitions. Word has length 131 [2023-12-25 15:10:08,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:08,716 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1755 transitions. [2023-12-25 15:10:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1755 transitions. [2023-12-25 15:10:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 15:10:08,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:08,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:08,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 15:10:08,718 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:08,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 362997412, now seen corresponding path program 1 times [2023-12-25 15:10:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087431727] [2023-12-25 15:10:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:09,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:09,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087431727] [2023-12-25 15:10:09,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087431727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:09,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:09,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:10:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706264044] [2023-12-25 15:10:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:10:09,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:10:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:10:09,441 INFO L87 Difference]: Start difference. First operand 1063 states and 1755 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:09,999 INFO L93 Difference]: Finished difference Result 3906 states and 6438 transitions. [2023-12-25 15:10:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 15:10:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-25 15:10:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:10,009 INFO L225 Difference]: With dead ends: 3906 [2023-12-25 15:10:10,009 INFO L226 Difference]: Without dead ends: 2970 [2023-12-25 15:10:10,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-25 15:10:10,012 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 13701 mSDsluCounter, 7105 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13701 SdHoareTripleChecker+Valid, 8824 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:10,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13701 Valid, 8824 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:10:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2023-12-25 15:10:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1067. [2023-12-25 15:10:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 1.6510318949343339) internal successors, (1760), 1066 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1760 transitions. [2023-12-25 15:10:10,041 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1760 transitions. Word has length 131 [2023-12-25 15:10:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:10,041 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1760 transitions. [2023-12-25 15:10:10,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1760 transitions. [2023-12-25 15:10:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-25 15:10:10,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:10,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 15:10:10,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:10,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 438232678, now seen corresponding path program 1 times [2023-12-25 15:10:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584997875] [2023-12-25 15:10:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584997875] [2023-12-25 15:10:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584997875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458209700] [2023-12-25 15:10:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:10,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:10,648 INFO L87 Difference]: Start difference. First operand 1067 states and 1760 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:10,864 INFO L93 Difference]: Finished difference Result 2947 states and 4857 transitions. [2023-12-25 15:10:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:10,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-12-25 15:10:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:10,872 INFO L225 Difference]: With dead ends: 2947 [2023-12-25 15:10:10,872 INFO L226 Difference]: Without dead ends: 2007 [2023-12-25 15:10:10,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:10,875 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 4674 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 5079 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:10,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 5079 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2023-12-25 15:10:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1070. [2023-12-25 15:10:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 1.6492048643592143) internal successors, (1763), 1069 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1763 transitions. [2023-12-25 15:10:10,902 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1763 transitions. Word has length 132 [2023-12-25 15:10:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:10,903 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1763 transitions. [2023-12-25 15:10:10,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1763 transitions. [2023-12-25 15:10:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:10,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:10,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 15:10:10,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:10,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -426645824, now seen corresponding path program 1 times [2023-12-25 15:10:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:10,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76171954] [2023-12-25 15:10:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76171954] [2023-12-25 15:10:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76171954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:11,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:11,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:10:11,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991715159] [2023-12-25 15:10:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:11,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:10:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:10:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:10:11,422 INFO L87 Difference]: Start difference. First operand 1070 states and 1763 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:11,875 INFO L93 Difference]: Finished difference Result 5833 states and 9587 transitions. [2023-12-25 15:10:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 15:10:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:11,895 INFO L225 Difference]: With dead ends: 5833 [2023-12-25 15:10:11,895 INFO L226 Difference]: Without dead ends: 4890 [2023-12-25 15:10:11,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-25 15:10:11,899 INFO L413 NwaCegarLoop]: 3276 mSDtfsCounter, 9132 mSDsluCounter, 13597 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9132 SdHoareTripleChecker+Valid, 16873 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:11,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9132 Valid, 16873 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2023-12-25 15:10:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 1094. [2023-12-25 15:10:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 1.6440988106129917) internal successors, (1797), 1093 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1797 transitions. [2023-12-25 15:10:11,940 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1797 transitions. Word has length 133 [2023-12-25 15:10:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:11,941 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1797 transitions. [2023-12-25 15:10:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1797 transitions. [2023-12-25 15:10:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:11,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:11,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 15:10:11,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:11,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash -286097214, now seen corresponding path program 1 times [2023-12-25 15:10:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506842325] [2023-12-25 15:10:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506842325] [2023-12-25 15:10:12,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506842325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:12,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:12,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:12,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655513016] [2023-12-25 15:10:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:12,495 INFO L87 Difference]: Start difference. First operand 1094 states and 1797 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:12,751 INFO L93 Difference]: Finished difference Result 3030 states and 4971 transitions. [2023-12-25 15:10:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:12,761 INFO L225 Difference]: With dead ends: 3030 [2023-12-25 15:10:12,762 INFO L226 Difference]: Without dead ends: 2063 [2023-12-25 15:10:12,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:12,764 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 3153 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3153 SdHoareTripleChecker+Valid, 8010 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:12,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3153 Valid, 8010 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 15:10:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-25 15:10:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1100. [2023-12-25 15:10:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 1.6424021838034577) internal successors, (1805), 1099 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1805 transitions. [2023-12-25 15:10:12,791 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1805 transitions. Word has length 133 [2023-12-25 15:10:12,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:12,792 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1805 transitions. [2023-12-25 15:10:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1805 transitions. [2023-12-25 15:10:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:12,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:12,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 15:10:12,794 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:12,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1153405402, now seen corresponding path program 1 times [2023-12-25 15:10:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138124435] [2023-12-25 15:10:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:12,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138124435] [2023-12-25 15:10:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138124435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589658458] [2023-12-25 15:10:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:13,598 INFO L87 Difference]: Start difference. First operand 1100 states and 1805 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:16,183 INFO L93 Difference]: Finished difference Result 3044 states and 4989 transitions. [2023-12-25 15:10:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:16,187 INFO L225 Difference]: With dead ends: 3044 [2023-12-25 15:10:16,188 INFO L226 Difference]: Without dead ends: 2071 [2023-12-25 15:10:16,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:16,189 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 4669 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:16,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 5564 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 15:10:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-12-25 15:10:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1153. [2023-12-25 15:10:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.6319444444444444) internal successors, (1880), 1152 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1880 transitions. [2023-12-25 15:10:16,216 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1880 transitions. Word has length 133 [2023-12-25 15:10:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:16,216 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1880 transitions. [2023-12-25 15:10:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1880 transitions. [2023-12-25 15:10:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:16,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:16,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:16,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 15:10:16,218 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:16,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1218333860, now seen corresponding path program 1 times [2023-12-25 15:10:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88127243] [2023-12-25 15:10:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88127243] [2023-12-25 15:10:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88127243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:16,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:16,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:10:16,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191758179] [2023-12-25 15:10:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:16,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:10:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:10:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:10:16,780 INFO L87 Difference]: Start difference. First operand 1153 states and 1880 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:18,848 INFO L93 Difference]: Finished difference Result 3089 states and 5050 transitions. [2023-12-25 15:10:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:10:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:18,852 INFO L225 Difference]: With dead ends: 3089 [2023-12-25 15:10:18,852 INFO L226 Difference]: Without dead ends: 2063 [2023-12-25 15:10:18,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:10:18,854 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 4662 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:18,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4662 Valid, 4502 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 15:10:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-25 15:10:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1151. [2023-12-25 15:10:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.6295652173913044) internal successors, (1874), 1150 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1874 transitions. [2023-12-25 15:10:18,878 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1874 transitions. Word has length 133 [2023-12-25 15:10:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:18,881 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1874 transitions. [2023-12-25 15:10:18,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1874 transitions. [2023-12-25 15:10:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:18,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:18,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:18,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 15:10:18,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:18,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1882071908, now seen corresponding path program 1 times [2023-12-25 15:10:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:18,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401077854] [2023-12-25 15:10:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401077854] [2023-12-25 15:10:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401077854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:19,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:19,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617029145] [2023-12-25 15:10:19,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:19,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:19,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:19,623 INFO L87 Difference]: Start difference. First operand 1151 states and 1874 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:21,955 INFO L93 Difference]: Finished difference Result 3189 states and 5184 transitions. [2023-12-25 15:10:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:21,961 INFO L225 Difference]: With dead ends: 3189 [2023-12-25 15:10:21,961 INFO L226 Difference]: Without dead ends: 2165 [2023-12-25 15:10:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:21,964 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 4659 mSDsluCounter, 4401 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:21,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4659 Valid, 5596 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 15:10:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2023-12-25 15:10:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1181. [2023-12-25 15:10:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 1.6271186440677967) internal successors, (1920), 1180 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1920 transitions. [2023-12-25 15:10:21,991 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1920 transitions. Word has length 133 [2023-12-25 15:10:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:21,992 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1920 transitions. [2023-12-25 15:10:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1920 transitions. [2023-12-25 15:10:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:21,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:21,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:21,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 15:10:21,993 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:21,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1607312294, now seen corresponding path program 1 times [2023-12-25 15:10:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991800968] [2023-12-25 15:10:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991800968] [2023-12-25 15:10:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991800968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:22,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:22,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:10:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058813423] [2023-12-25 15:10:22,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:22,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:10:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:10:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:10:22,573 INFO L87 Difference]: Start difference. First operand 1181 states and 1920 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:24,278 INFO L93 Difference]: Finished difference Result 3191 states and 5190 transitions. [2023-12-25 15:10:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:10:24,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:24,284 INFO L225 Difference]: With dead ends: 3191 [2023-12-25 15:10:24,284 INFO L226 Difference]: Without dead ends: 2137 [2023-12-25 15:10:24,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:10:24,286 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 4651 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4651 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:24,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4651 Valid, 4533 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:10:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-25 15:10:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1177. [2023-12-25 15:10:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.6258503401360545) internal successors, (1912), 1176 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1912 transitions. [2023-12-25 15:10:24,320 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1912 transitions. Word has length 133 [2023-12-25 15:10:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:24,321 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1912 transitions. [2023-12-25 15:10:24,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1912 transitions. [2023-12-25 15:10:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:24,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:24,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:24,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 15:10:24,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:24,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 232885698, now seen corresponding path program 1 times [2023-12-25 15:10:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179889826] [2023-12-25 15:10:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179889826] [2023-12-25 15:10:24,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179889826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:24,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:24,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:24,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411688107] [2023-12-25 15:10:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:24,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:24,833 INFO L87 Difference]: Start difference. First operand 1177 states and 1912 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:25,065 INFO L93 Difference]: Finished difference Result 3199 states and 5196 transitions. [2023-12-25 15:10:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:25,070 INFO L225 Difference]: With dead ends: 3199 [2023-12-25 15:10:25,070 INFO L226 Difference]: Without dead ends: 2149 [2023-12-25 15:10:25,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:25,072 INFO L413 NwaCegarLoop]: 3144 mSDtfsCounter, 3180 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 7970 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:25,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 7970 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 15:10:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-25 15:10:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1177. [2023-12-25 15:10:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.6241496598639455) internal successors, (1910), 1176 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1910 transitions. [2023-12-25 15:10:25,095 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1910 transitions. Word has length 133 [2023-12-25 15:10:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:25,095 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1910 transitions. [2023-12-25 15:10:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1910 transitions. [2023-12-25 15:10:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:25,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:25,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:25,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 15:10:25,097 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1176000164, now seen corresponding path program 1 times [2023-12-25 15:10:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:25,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117784682] [2023-12-25 15:10:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:25,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:25,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117784682] [2023-12-25 15:10:25,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117784682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:25,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340376425] [2023-12-25 15:10:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:25,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:25,664 INFO L87 Difference]: Start difference. First operand 1177 states and 1910 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:27,461 INFO L93 Difference]: Finished difference Result 3175 states and 5162 transitions. [2023-12-25 15:10:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:10:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:27,465 INFO L225 Difference]: With dead ends: 3175 [2023-12-25 15:10:27,465 INFO L226 Difference]: Without dead ends: 2125 [2023-12-25 15:10:27,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:10:27,467 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 4633 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:27,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 4576 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:10:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-12-25 15:10:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1177. [2023-12-25 15:10:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.620748299319728) internal successors, (1906), 1176 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1906 transitions. [2023-12-25 15:10:27,489 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1906 transitions. Word has length 133 [2023-12-25 15:10:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:27,489 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1906 transitions. [2023-12-25 15:10:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1906 transitions. [2023-12-25 15:10:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:27,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:27,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 15:10:27,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:27,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1663541048, now seen corresponding path program 1 times [2023-12-25 15:10:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632391168] [2023-12-25 15:10:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:28,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:28,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632391168] [2023-12-25 15:10:28,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632391168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:28,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612897139] [2023-12-25 15:10:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:28,015 INFO L87 Difference]: Start difference. First operand 1177 states and 1906 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:29,918 INFO L93 Difference]: Finished difference Result 3175 states and 5154 transitions. [2023-12-25 15:10:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:10:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:29,922 INFO L225 Difference]: With dead ends: 3175 [2023-12-25 15:10:29,922 INFO L226 Difference]: Without dead ends: 2125 [2023-12-25 15:10:29,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:10:29,924 INFO L413 NwaCegarLoop]: 2645 mSDtfsCounter, 3156 mSDsluCounter, 5742 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 8387 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:29,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 8387 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 15:10:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-12-25 15:10:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1206. [2023-12-25 15:10:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 1.6141078838174274) internal successors, (1945), 1205 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1945 transitions. [2023-12-25 15:10:29,946 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1945 transitions. Word has length 133 [2023-12-25 15:10:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:29,946 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1945 transitions. [2023-12-25 15:10:29,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1945 transitions. [2023-12-25 15:10:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 15:10:29,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:29,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:29,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 15:10:29,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:29,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 119796380, now seen corresponding path program 1 times [2023-12-25 15:10:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820854470] [2023-12-25 15:10:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:30,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:30,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820854470] [2023-12-25 15:10:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820854470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:30,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394858239] [2023-12-25 15:10:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:30,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:30,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:30,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:30,527 INFO L87 Difference]: Start difference. First operand 1206 states and 1945 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:30,693 INFO L93 Difference]: Finished difference Result 3361 states and 5407 transitions. [2023-12-25 15:10:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-12-25 15:10:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:30,698 INFO L225 Difference]: With dead ends: 3361 [2023-12-25 15:10:30,698 INFO L226 Difference]: Without dead ends: 2282 [2023-12-25 15:10:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:30,700 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 4593 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:30,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 5171 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-12-25 15:10:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1209. [2023-12-25 15:10:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.6125827814569536) internal successors, (1948), 1208 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1948 transitions. [2023-12-25 15:10:30,722 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1948 transitions. Word has length 133 [2023-12-25 15:10:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:30,722 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1948 transitions. [2023-12-25 15:10:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1948 transitions. [2023-12-25 15:10:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 15:10:30,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:30,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:30,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 15:10:30,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:30,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1428780858, now seen corresponding path program 1 times [2023-12-25 15:10:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089749160] [2023-12-25 15:10:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:30,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:31,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089749160] [2023-12-25 15:10:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089749160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983596308] [2023-12-25 15:10:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:31,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:31,266 INFO L87 Difference]: Start difference. First operand 1209 states and 1948 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:33,248 INFO L93 Difference]: Finished difference Result 3326 states and 5359 transitions. [2023-12-25 15:10:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-12-25 15:10:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:33,252 INFO L225 Difference]: With dead ends: 3326 [2023-12-25 15:10:33,252 INFO L226 Difference]: Without dead ends: 2244 [2023-12-25 15:10:33,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:33,254 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 3165 mSDsluCounter, 5753 mSDsCounter, 0 mSdLazyCounter, 3067 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 8408 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:33,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3165 Valid, 8408 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3067 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 15:10:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2023-12-25 15:10:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1239. [2023-12-25 15:10:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.6025848142164782) internal successors, (1984), 1238 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1984 transitions. [2023-12-25 15:10:33,275 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1984 transitions. Word has length 134 [2023-12-25 15:10:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:33,275 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1984 transitions. [2023-12-25 15:10:33,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1984 transitions. [2023-12-25 15:10:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:33,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:33,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 15:10:33,277 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:33,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:33,277 INFO L85 PathProgramCache]: Analyzing trace with hash 142138406, now seen corresponding path program 1 times [2023-12-25 15:10:33,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407853020] [2023-12-25 15:10:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:33,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407853020] [2023-12-25 15:10:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407853020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:10:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055852092] [2023-12-25 15:10:33,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:10:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:10:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:10:33,776 INFO L87 Difference]: Start difference. First operand 1239 states and 1984 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:33,987 INFO L93 Difference]: Finished difference Result 3467 states and 5534 transitions. [2023-12-25 15:10:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:10:33,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:33,990 INFO L225 Difference]: With dead ends: 3467 [2023-12-25 15:10:33,990 INFO L226 Difference]: Without dead ends: 2355 [2023-12-25 15:10:33,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:33,992 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 4580 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:33,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 5184 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 15:10:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2023-12-25 15:10:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 1244. [2023-12-25 15:10:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 1.6009654062751408) internal successors, (1990), 1243 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1990 transitions. [2023-12-25 15:10:34,013 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1990 transitions. Word has length 135 [2023-12-25 15:10:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:34,013 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1990 transitions. [2023-12-25 15:10:34,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1990 transitions. [2023-12-25 15:10:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:34,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:34,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:34,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 15:10:34,015 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:34,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash -116027032, now seen corresponding path program 1 times [2023-12-25 15:10:34,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653818718] [2023-12-25 15:10:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:34,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653818718] [2023-12-25 15:10:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653818718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:34,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 15:10:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027657959] [2023-12-25 15:10:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:10:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:10:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:10:34,427 INFO L87 Difference]: Start difference. First operand 1244 states and 1990 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:34,840 INFO L93 Difference]: Finished difference Result 6889 states and 10962 transitions. [2023-12-25 15:10:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 15:10:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:34,846 INFO L225 Difference]: With dead ends: 6889 [2023-12-25 15:10:34,847 INFO L226 Difference]: Without dead ends: 5772 [2023-12-25 15:10:34,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-25 15:10:34,850 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 10622 mSDsluCounter, 11994 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10622 SdHoareTripleChecker+Valid, 13806 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:34,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10622 Valid, 13806 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2023-12-25 15:10:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 1276. [2023-12-25 15:10:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 1.5952941176470588) internal successors, (2034), 1275 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2034 transitions. [2023-12-25 15:10:34,884 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2034 transitions. Word has length 135 [2023-12-25 15:10:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:34,884 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 2034 transitions. [2023-12-25 15:10:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2034 transitions. [2023-12-25 15:10:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:34,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:34,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 15:10:34,886 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 944719372, now seen corresponding path program 1 times [2023-12-25 15:10:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210659117] [2023-12-25 15:10:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:35,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:35,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210659117] [2023-12-25 15:10:35,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210659117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:35,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:35,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:35,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282385660] [2023-12-25 15:10:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:35,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:35,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:35,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:35,475 INFO L87 Difference]: Start difference. First operand 1276 states and 2034 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:37,563 INFO L93 Difference]: Finished difference Result 3390 states and 5428 transitions. [2023-12-25 15:10:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:37,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:37,565 INFO L225 Difference]: With dead ends: 3390 [2023-12-25 15:10:37,565 INFO L226 Difference]: Without dead ends: 2241 [2023-12-25 15:10:37,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:37,569 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 4651 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4651 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:37,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4651 Valid, 5570 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 15:10:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2023-12-25 15:10:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1318. [2023-12-25 15:10:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 1.5854214123006833) internal successors, (2088), 1317 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2088 transitions. [2023-12-25 15:10:37,598 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2088 transitions. Word has length 135 [2023-12-25 15:10:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:37,598 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2088 transitions. [2023-12-25 15:10:37,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2088 transitions. [2023-12-25 15:10:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:37,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:37,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 15:10:37,600 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -744224370, now seen corresponding path program 1 times [2023-12-25 15:10:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749607] [2023-12-25 15:10:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:38,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749607] [2023-12-25 15:10:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:10:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489774384] [2023-12-25 15:10:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:10:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:10:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:10:38,083 INFO L87 Difference]: Start difference. First operand 1318 states and 2088 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:39,785 INFO L93 Difference]: Finished difference Result 3410 states and 5448 transitions. [2023-12-25 15:10:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:10:39,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:39,788 INFO L225 Difference]: With dead ends: 3410 [2023-12-25 15:10:39,788 INFO L226 Difference]: Without dead ends: 2219 [2023-12-25 15:10:39,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:10:39,789 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 4642 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4642 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:39,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4642 Valid, 4508 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:10:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2023-12-25 15:10:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1316. [2023-12-25 15:10:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 1.5847908745247148) internal successors, (2084), 1315 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2084 transitions. [2023-12-25 15:10:39,810 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2084 transitions. Word has length 135 [2023-12-25 15:10:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:39,810 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 2084 transitions. [2023-12-25 15:10:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2084 transitions. [2023-12-25 15:10:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:39,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:39,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:39,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 15:10:39,812 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:39,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash -250040538, now seen corresponding path program 1 times [2023-12-25 15:10:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:39,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944566629] [2023-12-25 15:10:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944566629] [2023-12-25 15:10:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944566629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-25 15:10:41,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923491797] [2023-12-25 15:10:41,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:41,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 15:10:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 15:10:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-25 15:10:41,107 INFO L87 Difference]: Start difference. First operand 1316 states and 2084 transitions. Second operand has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:45,917 INFO L93 Difference]: Finished difference Result 12635 states and 20255 transitions. [2023-12-25 15:10:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-25 15:10:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:45,924 INFO L225 Difference]: With dead ends: 12635 [2023-12-25 15:10:45,924 INFO L226 Difference]: Without dead ends: 11446 [2023-12-25 15:10:45,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4811 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2774, Invalid=10566, Unknown=0, NotChecked=0, Total=13340 [2023-12-25 15:10:45,930 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 48655 mSDsluCounter, 46401 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48655 SdHoareTripleChecker+Valid, 48120 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:45,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48655 Valid, 48120 Invalid, 1800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 15:10:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2023-12-25 15:10:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 1358. [2023-12-25 15:10:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.5711127487103906) internal successors, (2132), 1357 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2132 transitions. [2023-12-25 15:10:45,977 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2132 transitions. Word has length 135 [2023-12-25 15:10:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:45,978 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2132 transitions. [2023-12-25 15:10:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2132 transitions. [2023-12-25 15:10:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:45,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:45,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 15:10:45,979 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:45,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1352350216, now seen corresponding path program 1 times [2023-12-25 15:10:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777264725] [2023-12-25 15:10:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777264725] [2023-12-25 15:10:46,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777264725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:46,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:46,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:10:46,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253596872] [2023-12-25 15:10:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:46,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:46,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:46,391 INFO L87 Difference]: Start difference. First operand 1358 states and 2132 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:46,582 INFO L93 Difference]: Finished difference Result 3728 states and 5863 transitions. [2023-12-25 15:10:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:10:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:46,585 INFO L225 Difference]: With dead ends: 3728 [2023-12-25 15:10:46,585 INFO L226 Difference]: Without dead ends: 2497 [2023-12-25 15:10:46,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 15:10:46,586 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 9092 mSDsluCounter, 5651 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9092 SdHoareTripleChecker+Valid, 7397 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9092 Valid, 7397 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 15:10:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2023-12-25 15:10:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1349. [2023-12-25 15:10:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.5719584569732938) internal successors, (2119), 1348 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2119 transitions. [2023-12-25 15:10:46,608 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2119 transitions. Word has length 135 [2023-12-25 15:10:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:46,608 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 2119 transitions. [2023-12-25 15:10:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2119 transitions. [2023-12-25 15:10:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:46,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:46,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 15:10:46,610 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:46,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2035822698, now seen corresponding path program 1 times [2023-12-25 15:10:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:46,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333553309] [2023-12-25 15:10:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333553309] [2023-12-25 15:10:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333553309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:47,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:47,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629280541] [2023-12-25 15:10:47,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:47,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:47,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:47,182 INFO L87 Difference]: Start difference. First operand 1349 states and 2119 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:49,542 INFO L93 Difference]: Finished difference Result 3638 states and 5739 transitions. [2023-12-25 15:10:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:49,544 INFO L225 Difference]: With dead ends: 3638 [2023-12-25 15:10:49,544 INFO L226 Difference]: Without dead ends: 2416 [2023-12-25 15:10:49,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:49,546 INFO L413 NwaCegarLoop]: 2654 mSDtfsCounter, 3140 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 4271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 10438 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:49,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3140 Valid, 10438 Invalid, 4273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4271 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 15:10:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2023-12-25 15:10:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1515. [2023-12-25 15:10:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.5442536327608982) internal successors, (2338), 1514 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2338 transitions. [2023-12-25 15:10:49,567 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2338 transitions. Word has length 135 [2023-12-25 15:10:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:49,567 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2338 transitions. [2023-12-25 15:10:49,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2338 transitions. [2023-12-25 15:10:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:49,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:49,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:49,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 15:10:49,569 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:49,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1463716646, now seen corresponding path program 1 times [2023-12-25 15:10:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044121259] [2023-12-25 15:10:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044121259] [2023-12-25 15:10:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044121259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:10:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765852416] [2023-12-25 15:10:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:10:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:10:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:10:50,048 INFO L87 Difference]: Start difference. First operand 1515 states and 2338 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:52,459 INFO L93 Difference]: Finished difference Result 3806 states and 5951 transitions. [2023-12-25 15:10:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:10:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:52,461 INFO L225 Difference]: With dead ends: 3806 [2023-12-25 15:10:52,462 INFO L226 Difference]: Without dead ends: 2418 [2023-12-25 15:10:52,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:10:52,463 INFO L413 NwaCegarLoop]: 2639 mSDtfsCounter, 3155 mSDsluCounter, 7760 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 10399 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:52,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 10399 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4243 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 15:10:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2023-12-25 15:10:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1515. [2023-12-25 15:10:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.5416116248348746) internal successors, (2334), 1514 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2334 transitions. [2023-12-25 15:10:52,486 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2334 transitions. Word has length 135 [2023-12-25 15:10:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:52,487 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2334 transitions. [2023-12-25 15:10:52,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2334 transitions. [2023-12-25 15:10:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 15:10:52,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:52,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:52,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 15:10:52,489 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:52,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash -402970242, now seen corresponding path program 1 times [2023-12-25 15:10:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:52,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207257037] [2023-12-25 15:10:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:53,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207257037] [2023-12-25 15:10:53,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207257037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:53,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:53,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:10:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142249879] [2023-12-25 15:10:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:53,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:10:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:10:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:10:53,011 INFO L87 Difference]: Start difference. First operand 1515 states and 2334 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:10:53,935 INFO L93 Difference]: Finished difference Result 4035 states and 6224 transitions. [2023-12-25 15:10:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:10:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-25 15:10:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:10:53,938 INFO L225 Difference]: With dead ends: 4035 [2023-12-25 15:10:53,938 INFO L226 Difference]: Without dead ends: 2647 [2023-12-25 15:10:53,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:10:53,940 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 4669 mSDsluCounter, 4378 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:10:53,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 6045 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 15:10:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2023-12-25 15:10:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 1517. [2023-12-25 15:10:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 1.5408970976253298) internal successors, (2336), 1516 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2336 transitions. [2023-12-25 15:10:53,963 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2336 transitions. Word has length 135 [2023-12-25 15:10:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:10:53,963 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2336 transitions. [2023-12-25 15:10:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:10:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2336 transitions. [2023-12-25 15:10:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:10:53,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:10:53,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:10:53,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 15:10:53,965 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:10:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:10:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1187583862, now seen corresponding path program 1 times [2023-12-25 15:10:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:10:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598873073] [2023-12-25 15:10:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:10:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:10:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:10:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:10:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:10:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598873073] [2023-12-25 15:10:55,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598873073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:10:55,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:10:55,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-25 15:10:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570658913] [2023-12-25 15:10:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:10:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 15:10:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:10:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 15:10:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2023-12-25 15:10:55,251 INFO L87 Difference]: Start difference. First operand 1517 states and 2336 transitions. Second operand has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:08,765 INFO L93 Difference]: Finished difference Result 13406 states and 20322 transitions. [2023-12-25 15:11:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-25 15:11:08,766 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:08,773 INFO L225 Difference]: With dead ends: 13406 [2023-12-25 15:11:08,773 INFO L226 Difference]: Without dead ends: 12018 [2023-12-25 15:11:08,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4961 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3400, Invalid=11606, Unknown=0, NotChecked=0, Total=15006 [2023-12-25 15:11:08,777 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 97094 mSDsluCounter, 34133 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97094 SdHoareTripleChecker+Valid, 35842 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97094 Valid, 35842 Invalid, 1833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-25 15:11:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2023-12-25 15:11:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 1599. [2023-12-25 15:11:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 1.5250312891113893) internal successors, (2437), 1598 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2437 transitions. [2023-12-25 15:11:08,831 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2437 transitions. Word has length 136 [2023-12-25 15:11:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:08,832 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2437 transitions. [2023-12-25 15:11:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2437 transitions. [2023-12-25 15:11:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:08,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:08,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 15:11:08,833 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1580610872, now seen corresponding path program 1 times [2023-12-25 15:11:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522588014] [2023-12-25 15:11:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522588014] [2023-12-25 15:11:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522588014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:09,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:09,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-25 15:11:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899352373] [2023-12-25 15:11:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 15:11:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 15:11:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:11:09,986 INFO L87 Difference]: Start difference. First operand 1599 states and 2437 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:17,179 INFO L93 Difference]: Finished difference Result 16683 states and 25749 transitions. [2023-12-25 15:11:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2023-12-25 15:11:17,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:17,188 INFO L225 Difference]: With dead ends: 16683 [2023-12-25 15:11:17,188 INFO L226 Difference]: Without dead ends: 15213 [2023-12-25 15:11:17,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10943 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5200, Invalid=22522, Unknown=0, NotChecked=0, Total=27722 [2023-12-25 15:11:17,195 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 94521 mSDsluCounter, 42445 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94521 SdHoareTripleChecker+Valid, 44157 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:17,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94521 Valid, 44157 Invalid, 1921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 15:11:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15213 states. [2023-12-25 15:11:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15213 to 1613. [2023-12-25 15:11:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.522332506203474) internal successors, (2454), 1612 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2454 transitions. [2023-12-25 15:11:17,252 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2454 transitions. Word has length 136 [2023-12-25 15:11:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:17,253 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2454 transitions. [2023-12-25 15:11:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2454 transitions. [2023-12-25 15:11:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:17,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:17,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:17,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-25 15:11:17,254 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:17,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1936625654, now seen corresponding path program 1 times [2023-12-25 15:11:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168289248] [2023-12-25 15:11:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168289248] [2023-12-25 15:11:17,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168289248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:17,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:17,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:11:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572774319] [2023-12-25 15:11:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:11:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:11:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:11:17,705 INFO L87 Difference]: Start difference. First operand 1613 states and 2454 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:19,743 INFO L93 Difference]: Finished difference Result 4010 states and 6199 transitions. [2023-12-25 15:11:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:11:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:19,746 INFO L225 Difference]: With dead ends: 4010 [2023-12-25 15:11:19,746 INFO L226 Difference]: Without dead ends: 2526 [2023-12-25 15:11:19,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:11:19,747 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 4646 mSDsluCounter, 4378 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:19,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4646 Valid, 5561 Invalid, 3111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 15:11:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2023-12-25 15:11:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1619. [2023-12-25 15:11:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 1.5203955500618047) internal successors, (2460), 1618 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2460 transitions. [2023-12-25 15:11:19,774 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2460 transitions. Word has length 136 [2023-12-25 15:11:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:19,775 INFO L495 AbstractCegarLoop]: Abstraction has 1619 states and 2460 transitions. [2023-12-25 15:11:19,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2460 transitions. [2023-12-25 15:11:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:19,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:19,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:19,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-25 15:11:19,776 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:19,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1078477964, now seen corresponding path program 1 times [2023-12-25 15:11:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:19,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654012024] [2023-12-25 15:11:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654012024] [2023-12-25 15:11:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654012024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:20,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:20,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280190899] [2023-12-25 15:11:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:20,219 INFO L87 Difference]: Start difference. First operand 1619 states and 2460 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:21,892 INFO L93 Difference]: Finished difference Result 3994 states and 6171 transitions. [2023-12-25 15:11:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:11:21,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:21,895 INFO L225 Difference]: With dead ends: 3994 [2023-12-25 15:11:21,895 INFO L226 Difference]: Without dead ends: 2504 [2023-12-25 15:11:21,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:11:21,897 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 4639 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:21,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 4500 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:11:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2023-12-25 15:11:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1613. [2023-12-25 15:11:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.5186104218362282) internal successors, (2448), 1612 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2448 transitions. [2023-12-25 15:11:21,921 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2448 transitions. Word has length 136 [2023-12-25 15:11:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:21,921 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2448 transitions. [2023-12-25 15:11:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2448 transitions. [2023-12-25 15:11:21,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:21,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:21,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-25 15:11:21,923 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:21,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash 812881712, now seen corresponding path program 1 times [2023-12-25 15:11:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654416684] [2023-12-25 15:11:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:22,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:22,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654416684] [2023-12-25 15:11:22,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654416684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:22,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:11:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621745292] [2023-12-25 15:11:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:22,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 15:11:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 15:11:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:11:22,311 INFO L87 Difference]: Start difference. First operand 1613 states and 2448 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:24,386 INFO L93 Difference]: Finished difference Result 3992 states and 6157 transitions. [2023-12-25 15:11:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 15:11:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:24,388 INFO L225 Difference]: With dead ends: 3992 [2023-12-25 15:11:24,388 INFO L226 Difference]: Without dead ends: 2508 [2023-12-25 15:11:24,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:11:24,390 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 4660 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:24,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 5567 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-25 15:11:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-25 15:11:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1613. [2023-12-25 15:11:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.5148883374689825) internal successors, (2442), 1612 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2442 transitions. [2023-12-25 15:11:24,410 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2442 transitions. Word has length 136 [2023-12-25 15:11:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:24,410 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2442 transitions. [2023-12-25 15:11:24,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2442 transitions. [2023-12-25 15:11:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:24,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:24,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-25 15:11:24,412 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:24,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1472413234, now seen corresponding path program 1 times [2023-12-25 15:11:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795775125] [2023-12-25 15:11:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795775125] [2023-12-25 15:11:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795775125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:24,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378623646] [2023-12-25 15:11:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:24,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:24,786 INFO L87 Difference]: Start difference. First operand 1613 states and 2442 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:26,468 INFO L93 Difference]: Finished difference Result 3957 states and 6106 transitions. [2023-12-25 15:11:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:11:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:26,470 INFO L225 Difference]: With dead ends: 3957 [2023-12-25 15:11:26,470 INFO L226 Difference]: Without dead ends: 2473 [2023-12-25 15:11:26,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:11:26,472 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 4655 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 4506 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:26,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 4506 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:11:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-12-25 15:11:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1582. [2023-12-25 15:11:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5186590765338392) internal successors, (2401), 1581 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2401 transitions. [2023-12-25 15:11:26,490 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2401 transitions. Word has length 136 [2023-12-25 15:11:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:26,490 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2401 transitions. [2023-12-25 15:11:26,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2401 transitions. [2023-12-25 15:11:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:26,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:26,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:26,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-25 15:11:26,492 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:26,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 606461540, now seen corresponding path program 1 times [2023-12-25 15:11:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728670665] [2023-12-25 15:11:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728670665] [2023-12-25 15:11:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728670665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:26,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:11:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012894712] [2023-12-25 15:11:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:26,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:11:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:11:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:11:26,936 INFO L87 Difference]: Start difference. First operand 1582 states and 2401 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:27,248 INFO L93 Difference]: Finished difference Result 4068 states and 6224 transitions. [2023-12-25 15:11:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:11:27,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:27,250 INFO L225 Difference]: With dead ends: 4068 [2023-12-25 15:11:27,250 INFO L226 Difference]: Without dead ends: 2615 [2023-12-25 15:11:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:11:27,254 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 4644 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 4996 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:11:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2023-12-25 15:11:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1597. [2023-12-25 15:11:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1596 states have (on average 1.5156641604010026) internal successors, (2419), 1596 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2419 transitions. [2023-12-25 15:11:27,277 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2419 transitions. Word has length 136 [2023-12-25 15:11:27,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:27,277 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2419 transitions. [2023-12-25 15:11:27,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:27,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2419 transitions. [2023-12-25 15:11:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 15:11:27,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:27,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:27,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 15:11:27,279 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:27,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash 346206536, now seen corresponding path program 1 times [2023-12-25 15:11:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529582484] [2023-12-25 15:11:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529582484] [2023-12-25 15:11:27,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529582484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:27,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332329498] [2023-12-25 15:11:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:27,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:27,760 INFO L87 Difference]: Start difference. First operand 1597 states and 2419 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:28,675 INFO L93 Difference]: Finished difference Result 3969 states and 6103 transitions. [2023-12-25 15:11:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:11:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-25 15:11:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:28,677 INFO L225 Difference]: With dead ends: 3969 [2023-12-25 15:11:28,677 INFO L226 Difference]: Without dead ends: 2508 [2023-12-25 15:11:28,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:11:28,679 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 4619 mSDsluCounter, 4376 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 6043 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:28,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 6043 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 15:11:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-25 15:11:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1589. [2023-12-25 15:11:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1588 states have (on average 1.5163727959697733) internal successors, (2408), 1588 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2408 transitions. [2023-12-25 15:11:28,698 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2408 transitions. Word has length 136 [2023-12-25 15:11:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:28,699 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2408 transitions. [2023-12-25 15:11:28,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2408 transitions. [2023-12-25 15:11:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-25 15:11:28,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:28,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 15:11:28,699 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:28,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 440689154, now seen corresponding path program 1 times [2023-12-25 15:11:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039465260] [2023-12-25 15:11:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:29,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039465260] [2023-12-25 15:11:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039465260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:29,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671563676] [2023-12-25 15:11:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:29,065 INFO L87 Difference]: Start difference. First operand 1589 states and 2408 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:30,755 INFO L93 Difference]: Finished difference Result 4011 states and 6165 transitions. [2023-12-25 15:11:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:11:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-25 15:11:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:30,757 INFO L225 Difference]: With dead ends: 4011 [2023-12-25 15:11:30,758 INFO L226 Difference]: Without dead ends: 2558 [2023-12-25 15:11:30,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:11:30,759 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 4634 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4634 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:30,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4634 Valid, 4527 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:11:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2023-12-25 15:11:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1589. [2023-12-25 15:11:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1588 states have (on average 1.5107052896725441) internal successors, (2399), 1588 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2399 transitions. [2023-12-25 15:11:30,779 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2399 transitions. Word has length 137 [2023-12-25 15:11:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:30,779 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2399 transitions. [2023-12-25 15:11:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2399 transitions. [2023-12-25 15:11:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-12-25 15:11:30,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:30,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 15:11:30,787 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:30,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash -90118268, now seen corresponding path program 1 times [2023-12-25 15:11:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378488505] [2023-12-25 15:11:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:30,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:32,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:32,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378488505] [2023-12-25 15:11:32,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378488505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 15:11:32,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892856932] [2023-12-25 15:11:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:32,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:11:32,948 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) [2023-12-25 15:11:32,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 15:11:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:34,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 7185 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 15:11:34,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:11:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:36,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:11:36,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892856932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:36,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 15:11:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-25 15:11:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767617046] [2023-12-25 15:11:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:36,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:11:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:11:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:11:36,369 INFO L87 Difference]: Start difference. First operand 1589 states and 2399 transitions. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:37,914 INFO L93 Difference]: Finished difference Result 3937 states and 6043 transitions. [2023-12-25 15:11:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:11:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 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 754 [2023-12-25 15:11:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:37,917 INFO L225 Difference]: With dead ends: 3937 [2023-12-25 15:11:37,917 INFO L226 Difference]: Without dead ends: 2484 [2023-12-25 15:11:37,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:11:37,919 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 4012 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4012 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:37,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4012 Valid, 3253 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 15:11:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2023-12-25 15:11:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2432. [2023-12-25 15:11:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5532702591526122) internal successors, (3776), 2431 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3776 transitions. [2023-12-25 15:11:37,946 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3776 transitions. Word has length 754 [2023-12-25 15:11:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:37,946 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3776 transitions. [2023-12-25 15:11:37,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3776 transitions. [2023-12-25 15:11:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-25 15:11:37,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:37,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:37,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 15:11:38,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:11:38,172 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:38,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:38,173 INFO L85 PathProgramCache]: Analyzing trace with hash 824392594, now seen corresponding path program 1 times [2023-12-25 15:11:38,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241476482] [2023-12-25 15:11:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:38,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241476482] [2023-12-25 15:11:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241476482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524705716] [2023-12-25 15:11:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:40,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:40,177 INFO L87 Difference]: Start difference. First operand 2432 states and 3776 transitions. Second operand has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:41,377 INFO L93 Difference]: Finished difference Result 4523 states and 7001 transitions. [2023-12-25 15:11:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 15:11:41,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 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 755 [2023-12-25 15:11:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:41,381 INFO L225 Difference]: With dead ends: 4523 [2023-12-25 15:11:41,381 INFO L226 Difference]: Without dead ends: 2484 [2023-12-25 15:11:41,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:11:41,382 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 5209 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 6108 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:41,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 6108 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 15:11:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2023-12-25 15:11:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2432. [2023-12-25 15:11:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5528589058000823) internal successors, (3775), 2431 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3775 transitions. [2023-12-25 15:11:41,405 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3775 transitions. Word has length 755 [2023-12-25 15:11:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:41,405 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3775 transitions. [2023-12-25 15:11:41,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3775 transitions. [2023-12-25 15:11:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-12-25 15:11:41,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:41,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:41,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 15:11:41,412 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:41,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1516382062, now seen corresponding path program 1 times [2023-12-25 15:11:41,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:41,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205779655] [2023-12-25 15:11:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:41,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:43,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:43,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205779655] [2023-12-25 15:11:43,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205779655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:43,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808659395] [2023-12-25 15:11:43,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:43,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:43,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:43,410 INFO L87 Difference]: Start difference. First operand 2432 states and 3775 transitions. Second operand has 6 states, 6 states have (on average 126.0) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:45,136 INFO L93 Difference]: Finished difference Result 4648 states and 7199 transitions. [2023-12-25 15:11:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:11:45,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 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 756 [2023-12-25 15:11:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:45,139 INFO L225 Difference]: With dead ends: 4648 [2023-12-25 15:11:45,139 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:11:45,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:11:45,141 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 4731 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:45,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 6292 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:11:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:11:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:11:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5524475524475525) internal successors, (3774), 2431 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3774 transitions. [2023-12-25 15:11:45,167 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3774 transitions. Word has length 756 [2023-12-25 15:11:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:45,168 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3774 transitions. [2023-12-25 15:11:45,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:45,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3774 transitions. [2023-12-25 15:11:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-12-25 15:11:45,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:45,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:45,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 15:11:45,175 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:45,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1872070128, now seen corresponding path program 1 times [2023-12-25 15:11:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185314886] [2023-12-25 15:11:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185314886] [2023-12-25 15:11:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185314886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:47,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:47,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:47,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045187812] [2023-12-25 15:11:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:47,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:47,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:47,123 INFO L87 Difference]: Start difference. First operand 2432 states and 3774 transitions. Second operand has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:48,851 INFO L93 Difference]: Finished difference Result 4642 states and 7188 transitions. [2023-12-25 15:11:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:11:48,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 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 [2023-12-25 15:11:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:48,854 INFO L225 Difference]: With dead ends: 4642 [2023-12-25 15:11:48,854 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:11:48,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:11:48,857 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 4724 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:48,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4724 Valid, 6287 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1966 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:11:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:11:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:11:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5520361990950227) internal successors, (3773), 2431 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3773 transitions. [2023-12-25 15:11:48,884 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3773 transitions. Word has length 757 [2023-12-25 15:11:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:48,884 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3773 transitions. [2023-12-25 15:11:48,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3773 transitions. [2023-12-25 15:11:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-12-25 15:11:48,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:48,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:48,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-25 15:11:48,890 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:48,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1645403910, now seen corresponding path program 1 times [2023-12-25 15:11:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:48,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273468525] [2023-12-25 15:11:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273468525] [2023-12-25 15:11:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273468525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:50,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:50,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193658058] [2023-12-25 15:11:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:50,829 INFO L87 Difference]: Start difference. First operand 2432 states and 3773 transitions. Second operand has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:52,645 INFO L93 Difference]: Finished difference Result 4516 states and 6977 transitions. [2023-12-25 15:11:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:11:52,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 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 758 [2023-12-25 15:11:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:52,649 INFO L225 Difference]: With dead ends: 4516 [2023-12-25 15:11:52,649 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:11:52,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:11:52,651 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 4637 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:52,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 6292 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:11:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:11:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:11:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5516248457424928) internal successors, (3772), 2431 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3772 transitions. [2023-12-25 15:11:52,676 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3772 transitions. Word has length 758 [2023-12-25 15:11:52,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:52,676 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3772 transitions. [2023-12-25 15:11:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3772 transitions. [2023-12-25 15:11:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-12-25 15:11:52,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:52,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:52,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-25 15:11:52,682 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:52,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 753127564, now seen corresponding path program 1 times [2023-12-25 15:11:52,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457485600] [2023-12-25 15:11:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:54,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:54,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457485600] [2023-12-25 15:11:54,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457485600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:54,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:54,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:54,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698762248] [2023-12-25 15:11:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:54,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:54,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:54,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:54,717 INFO L87 Difference]: Start difference. First operand 2432 states and 3772 transitions. Second operand has 6 states, 6 states have (on average 126.5) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:11:56,531 INFO L93 Difference]: Finished difference Result 4501 states and 6951 transitions. [2023-12-25 15:11:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:11:56,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.5) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 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 759 [2023-12-25 15:11:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:11:56,534 INFO L225 Difference]: With dead ends: 4501 [2023-12-25 15:11:56,534 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:11:56,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:11:56,536 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 4624 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:11:56,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 6297 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:11:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:11:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:11:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.551213492389963) internal successors, (3771), 2431 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3771 transitions. [2023-12-25 15:11:56,562 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3771 transitions. Word has length 759 [2023-12-25 15:11:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:11:56,562 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3771 transitions. [2023-12-25 15:11:56,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.5) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:11:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3771 transitions. [2023-12-25 15:11:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-25 15:11:56,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:11:56,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:11:56,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-25 15:11:56,568 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:11:56,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:11:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1682564536, now seen corresponding path program 1 times [2023-12-25 15:11:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:11:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594940405] [2023-12-25 15:11:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:11:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:11:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:11:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:11:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:11:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594940405] [2023-12-25 15:11:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594940405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:11:58,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:11:58,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:11:58,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447223707] [2023-12-25 15:11:58,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:11:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:11:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:11:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:11:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:11:58,570 INFO L87 Difference]: Start difference. First operand 2432 states and 3771 transitions. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:00,488 INFO L93 Difference]: Finished difference Result 4495 states and 6940 transitions. [2023-12-25 15:12:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 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 760 [2023-12-25 15:12:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:00,492 INFO L225 Difference]: With dead ends: 4495 [2023-12-25 15:12:00,492 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:12:00,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:12:00,494 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 4617 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 6294 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:00,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 6294 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 15:12:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:12:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:12:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5508021390374331) internal successors, (3770), 2431 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3770 transitions. [2023-12-25 15:12:00,517 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3770 transitions. Word has length 760 [2023-12-25 15:12:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:00,518 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3770 transitions. [2023-12-25 15:12:00,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3770 transitions. [2023-12-25 15:12:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-12-25 15:12:00,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:00,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-25 15:12:00,523 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:00,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash -685470120, now seen corresponding path program 1 times [2023-12-25 15:12:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:00,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776877795] [2023-12-25 15:12:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:02,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776877795] [2023-12-25 15:12:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776877795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:02,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175702130] [2023-12-25 15:12:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:02,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:02,534 INFO L87 Difference]: Start difference. First operand 2432 states and 3770 transitions. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:04,331 INFO L93 Difference]: Finished difference Result 4369 states and 6729 transitions. [2023-12-25 15:12:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 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 761 [2023-12-25 15:12:04,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:04,335 INFO L225 Difference]: With dead ends: 4369 [2023-12-25 15:12:04,335 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:12:04,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:12:04,337 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 4530 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4530 SdHoareTripleChecker+Valid, 6295 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:04,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4530 Valid, 6295 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 15:12:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:12:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:12:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5503907856849033) internal successors, (3769), 2431 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3769 transitions. [2023-12-25 15:12:04,366 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3769 transitions. Word has length 761 [2023-12-25 15:12:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:04,367 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3769 transitions. [2023-12-25 15:12:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3769 transitions. [2023-12-25 15:12:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-12-25 15:12:04,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:04,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-25 15:12:04,374 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:04,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1605919220, now seen corresponding path program 1 times [2023-12-25 15:12:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:04,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478194731] [2023-12-25 15:12:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:06,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:06,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478194731] [2023-12-25 15:12:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478194731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:06,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:06,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975251518] [2023-12-25 15:12:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:06,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:06,415 INFO L87 Difference]: Start difference. First operand 2432 states and 3769 transitions. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:07,835 INFO L93 Difference]: Finished difference Result 4354 states and 6703 transitions. [2023-12-25 15:12:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 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 762 [2023-12-25 15:12:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:07,840 INFO L225 Difference]: With dead ends: 4354 [2023-12-25 15:12:07,840 INFO L226 Difference]: Without dead ends: 2895 [2023-12-25 15:12:07,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:12:07,842 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 5116 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5116 SdHoareTripleChecker+Valid, 5779 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:07,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5116 Valid, 5779 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 15:12:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2023-12-25 15:12:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2432. [2023-12-25 15:12:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5499794323323735) internal successors, (3768), 2431 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3768 transitions. [2023-12-25 15:12:07,870 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3768 transitions. Word has length 762 [2023-12-25 15:12:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:07,871 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3768 transitions. [2023-12-25 15:12:07,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3768 transitions. [2023-12-25 15:12:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-12-25 15:12:07,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:07,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-25 15:12:07,878 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:07,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1729807318, now seen corresponding path program 1 times [2023-12-25 15:12:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:07,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680659436] [2023-12-25 15:12:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680659436] [2023-12-25 15:12:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680659436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:10,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:10,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:12:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873174317] [2023-12-25 15:12:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:12:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:12:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:12:10,356 INFO L87 Difference]: Start difference. First operand 2432 states and 3768 transitions. Second operand has 5 states, 5 states have (on average 152.6) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:10,789 INFO L93 Difference]: Finished difference Result 4285 states and 6603 transitions. [2023-12-25 15:12:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:12:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 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 763 [2023-12-25 15:12:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:10,792 INFO L225 Difference]: With dead ends: 4285 [2023-12-25 15:12:10,792 INFO L226 Difference]: Without dead ends: 2484 [2023-12-25 15:12:10,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:10,794 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 3873 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:10,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3873 Valid, 4819 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:12:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2023-12-25 15:12:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2432. [2023-12-25 15:12:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5491567256273138) internal successors, (3766), 2431 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3766 transitions. [2023-12-25 15:12:10,818 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3766 transitions. Word has length 763 [2023-12-25 15:12:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:10,818 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3766 transitions. [2023-12-25 15:12:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3766 transitions. [2023-12-25 15:12:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-12-25 15:12:10,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:10,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-25 15:12:10,823 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -467325742, now seen corresponding path program 1 times [2023-12-25 15:12:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:10,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522271549] [2023-12-25 15:12:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522271549] [2023-12-25 15:12:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522271549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:12,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:12,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:12,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228861522] [2023-12-25 15:12:12,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:12,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:12,850 INFO L87 Difference]: Start difference. First operand 2432 states and 3766 transitions. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:13,200 INFO L93 Difference]: Finished difference Result 4728 states and 7336 transitions. [2023-12-25 15:12:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 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 [2023-12-25 15:12:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:13,204 INFO L225 Difference]: With dead ends: 4728 [2023-12-25 15:12:13,204 INFO L226 Difference]: Without dead ends: 2930 [2023-12-25 15:12:13,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:12:13,205 INFO L413 NwaCegarLoop]: 2368 mSDtfsCounter, 4160 mSDsluCounter, 4795 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4160 SdHoareTripleChecker+Valid, 7163 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:13,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4160 Valid, 7163 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:12:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-25 15:12:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2432. [2023-12-25 15:12:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5487453722747841) internal successors, (3765), 2431 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3765 transitions. [2023-12-25 15:12:13,229 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3765 transitions. Word has length 764 [2023-12-25 15:12:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:13,229 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3765 transitions. [2023-12-25 15:12:13,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3765 transitions. [2023-12-25 15:12:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-12-25 15:12:13,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:13,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-25 15:12:13,235 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:13,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash 514789562, now seen corresponding path program 1 times [2023-12-25 15:12:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276260740] [2023-12-25 15:12:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276260740] [2023-12-25 15:12:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276260740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:15,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712091431] [2023-12-25 15:12:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:15,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:15,058 INFO L87 Difference]: Start difference. First operand 2432 states and 3765 transitions. Second operand has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:15,425 INFO L93 Difference]: Finished difference Result 4584 states and 7098 transitions. [2023-12-25 15:12:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 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 765 [2023-12-25 15:12:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:15,429 INFO L225 Difference]: With dead ends: 4584 [2023-12-25 15:12:15,429 INFO L226 Difference]: Without dead ends: 2930 [2023-12-25 15:12:15,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:12:15,431 INFO L413 NwaCegarLoop]: 2370 mSDtfsCounter, 5418 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:15,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5418 Valid, 7167 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:12:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-25 15:12:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2432. [2023-12-25 15:12:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5483340189222543) internal successors, (3764), 2431 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3764 transitions. [2023-12-25 15:12:15,460 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3764 transitions. Word has length 765 [2023-12-25 15:12:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:15,461 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3764 transitions. [2023-12-25 15:12:15,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3764 transitions. [2023-12-25 15:12:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-12-25 15:12:15,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:15,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:15,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-25 15:12:15,468 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:15,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1486501438, now seen corresponding path program 1 times [2023-12-25 15:12:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335916306] [2023-12-25 15:12:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335916306] [2023-12-25 15:12:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335916306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:17,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:17,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:17,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115420759] [2023-12-25 15:12:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:17,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:17,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:17,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:17,254 INFO L87 Difference]: Start difference. First operand 2432 states and 3764 transitions. Second operand has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:17,703 INFO L93 Difference]: Finished difference Result 4581 states and 7092 transitions. [2023-12-25 15:12:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 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 766 [2023-12-25 15:12:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:17,706 INFO L225 Difference]: With dead ends: 4581 [2023-12-25 15:12:17,706 INFO L226 Difference]: Without dead ends: 2930 [2023-12-25 15:12:17,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:12:17,708 INFO L413 NwaCegarLoop]: 2371 mSDtfsCounter, 4839 mSDsluCounter, 5637 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 8008 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:17,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 8008 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:12:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-25 15:12:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2432. [2023-12-25 15:12:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5479226655697245) internal successors, (3763), 2431 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3763 transitions. [2023-12-25 15:12:17,731 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3763 transitions. Word has length 766 [2023-12-25 15:12:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:17,731 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3763 transitions. [2023-12-25 15:12:17,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3763 transitions. [2023-12-25 15:12:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-12-25 15:12:17,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:17,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-25 15:12:17,737 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:17,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1884044820, now seen corresponding path program 1 times [2023-12-25 15:12:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143382978] [2023-12-25 15:12:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:19,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:19,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143382978] [2023-12-25 15:12:19,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143382978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:19,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:19,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154903570] [2023-12-25 15:12:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:19,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:19,783 INFO L87 Difference]: Start difference. First operand 2432 states and 3763 transitions. Second operand has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:20,275 INFO L93 Difference]: Finished difference Result 4437 states and 6854 transitions. [2023-12-25 15:12:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 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 767 [2023-12-25 15:12:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:20,278 INFO L225 Difference]: With dead ends: 4437 [2023-12-25 15:12:20,279 INFO L226 Difference]: Without dead ends: 2930 [2023-12-25 15:12:20,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:12:20,280 INFO L413 NwaCegarLoop]: 2372 mSDtfsCounter, 3711 mSDsluCounter, 5637 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3711 SdHoareTripleChecker+Valid, 8009 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:20,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3711 Valid, 8009 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:12:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-25 15:12:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2432. [2023-12-25 15:12:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5475113122171946) internal successors, (3762), 2431 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3762 transitions. [2023-12-25 15:12:20,303 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3762 transitions. Word has length 767 [2023-12-25 15:12:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:20,303 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3762 transitions. [2023-12-25 15:12:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3762 transitions. [2023-12-25 15:12:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2023-12-25 15:12:20,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:20,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:20,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-25 15:12:20,309 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:20,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2017246738, now seen corresponding path program 1 times [2023-12-25 15:12:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200187096] [2023-12-25 15:12:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:20,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:22,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200187096] [2023-12-25 15:12:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200187096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:22,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:22,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:12:22,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309136688] [2023-12-25 15:12:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:22,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:12:22,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:12:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:12:22,397 INFO L87 Difference]: Start difference. First operand 2432 states and 3762 transitions. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:22,964 INFO L93 Difference]: Finished difference Result 4434 states and 6848 transitions. [2023-12-25 15:12:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:12:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 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 768 [2023-12-25 15:12:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:22,968 INFO L225 Difference]: With dead ends: 4434 [2023-12-25 15:12:22,968 INFO L226 Difference]: Without dead ends: 2930 [2023-12-25 15:12:22,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:12:22,969 INFO L413 NwaCegarLoop]: 2373 mSDtfsCounter, 4172 mSDsluCounter, 5637 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 8010 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:22,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 8010 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:12:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2023-12-25 15:12:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2432. [2023-12-25 15:12:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.5470999588646648) internal successors, (3761), 2431 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3761 transitions. [2023-12-25 15:12:22,995 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3761 transitions. Word has length 768 [2023-12-25 15:12:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:22,995 INFO L495 AbstractCegarLoop]: Abstraction has 2432 states and 3761 transitions. [2023-12-25 15:12:22,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3761 transitions. [2023-12-25 15:12:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-25 15:12:23,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:23,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-25 15:12:23,001 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:23,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1095215418, now seen corresponding path program 1 times [2023-12-25 15:12:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:23,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65632459] [2023-12-25 15:12:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:23,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65632459] [2023-12-25 15:12:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65632459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:12:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113623017] [2023-12-25 15:12:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:12:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:12:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:12:31,074 INFO L87 Difference]: Start difference. First operand 2432 states and 3761 transitions. Second operand has 11 states, 11 states have (on average 69.9090909090909) internal successors, (769), 10 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:34,706 INFO L93 Difference]: Finished difference Result 4657 states and 7179 transitions. [2023-12-25 15:12:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 15:12:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 69.9090909090909) internal successors, (769), 10 states have internal predecessors, (769), 0 states have call successors, (0), 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 769 [2023-12-25 15:12:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:34,710 INFO L225 Difference]: With dead ends: 4657 [2023-12-25 15:12:34,710 INFO L226 Difference]: Without dead ends: 3147 [2023-12-25 15:12:34,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-25 15:12:34,711 INFO L413 NwaCegarLoop]: 2104 mSDtfsCounter, 4968 mSDsluCounter, 11475 mSDsCounter, 0 mSdLazyCounter, 6033 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4968 SdHoareTripleChecker+Valid, 13579 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 6033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:34,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4968 Valid, 13579 Invalid, 6102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 6033 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 15:12:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-12-25 15:12:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2450. [2023-12-25 15:12:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 1.5471621069824417) internal successors, (3789), 2449 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3789 transitions. [2023-12-25 15:12:34,734 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3789 transitions. Word has length 769 [2023-12-25 15:12:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:34,734 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3789 transitions. [2023-12-25 15:12:34,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 69.9090909090909) internal successors, (769), 10 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3789 transitions. [2023-12-25 15:12:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-25 15:12:34,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:34,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-25 15:12:34,740 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:34,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 374802568, now seen corresponding path program 1 times [2023-12-25 15:12:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:34,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304767232] [2023-12-25 15:12:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304767232] [2023-12-25 15:12:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304767232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:36,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:36,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:12:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645356195] [2023-12-25 15:12:36,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:36,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:12:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:36,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:12:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:36,652 INFO L87 Difference]: Start difference. First operand 2450 states and 3789 transitions. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:36,690 INFO L93 Difference]: Finished difference Result 3988 states and 6102 transitions. [2023-12-25 15:12:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:12:36,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 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 770 [2023-12-25 15:12:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:36,693 INFO L225 Difference]: With dead ends: 3988 [2023-12-25 15:12:36,693 INFO L226 Difference]: Without dead ends: 2456 [2023-12-25 15:12:36,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:36,694 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5182 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:36,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5182 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:12:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2023-12-25 15:12:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2454. [2023-12-25 15:12:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2453 states have (on average 1.5462698736241338) internal successors, (3793), 2453 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3793 transitions. [2023-12-25 15:12:36,716 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3793 transitions. Word has length 770 [2023-12-25 15:12:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:36,717 INFO L495 AbstractCegarLoop]: Abstraction has 2454 states and 3793 transitions. [2023-12-25 15:12:36,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3793 transitions. [2023-12-25 15:12:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-25 15:12:36,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:36,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:36,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-25 15:12:36,722 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:36,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash 41716000, now seen corresponding path program 1 times [2023-12-25 15:12:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:36,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317540059] [2023-12-25 15:12:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:36,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317540059] [2023-12-25 15:12:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317540059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:38,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:12:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623472780] [2023-12-25 15:12:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:38,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:12:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:12:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:38,717 INFO L87 Difference]: Start difference. First operand 2454 states and 3793 transitions. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:38,765 INFO L93 Difference]: Finished difference Result 3985 states and 6092 transitions. [2023-12-25 15:12:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:12:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 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 770 [2023-12-25 15:12:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:38,768 INFO L225 Difference]: With dead ends: 3985 [2023-12-25 15:12:38,768 INFO L226 Difference]: Without dead ends: 2463 [2023-12-25 15:12:38,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:12:38,769 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5182 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:38,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5182 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:12:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2023-12-25 15:12:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2460. [2023-12-25 15:12:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2459 states have (on average 1.5449369662464416) internal successors, (3799), 2459 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3799 transitions. [2023-12-25 15:12:38,794 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3799 transitions. Word has length 770 [2023-12-25 15:12:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:38,795 INFO L495 AbstractCegarLoop]: Abstraction has 2460 states and 3799 transitions. [2023-12-25 15:12:38,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3799 transitions. [2023-12-25 15:12:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-25 15:12:38,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:38,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:38,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-25 15:12:38,801 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:38,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1069754030, now seen corresponding path program 1 times [2023-12-25 15:12:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:38,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131862862] [2023-12-25 15:12:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:47,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131862862] [2023-12-25 15:12:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131862862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:47,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:12:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172702094] [2023-12-25 15:12:47,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:12:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:12:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:12:47,069 INFO L87 Difference]: Start difference. First operand 2460 states and 3799 transitions. Second operand has 11 states, 11 states have (on average 70.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:12:50,305 INFO L93 Difference]: Finished difference Result 5202 states and 8043 transitions. [2023-12-25 15:12:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 15:12:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 70.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 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 770 [2023-12-25 15:12:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:12:50,311 INFO L225 Difference]: With dead ends: 5202 [2023-12-25 15:12:50,311 INFO L226 Difference]: Without dead ends: 3517 [2023-12-25 15:12:50,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-25 15:12:50,313 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 6832 mSDsluCounter, 7615 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6832 SdHoareTripleChecker+Valid, 9477 SdHoareTripleChecker+Invalid, 4040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:12:50,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6832 Valid, 9477 Invalid, 4040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 15:12:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2023-12-25 15:12:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2478. [2023-12-25 15:12:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 1.5450141299959628) internal successors, (3827), 2477 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3827 transitions. [2023-12-25 15:12:50,343 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3827 transitions. Word has length 770 [2023-12-25 15:12:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:12:50,343 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3827 transitions. [2023-12-25 15:12:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:12:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3827 transitions. [2023-12-25 15:12:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-12-25 15:12:50,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:12:50,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:12:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-25 15:12:50,349 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:12:50,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:12:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1447408924, now seen corresponding path program 1 times [2023-12-25 15:12:50,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:12:50,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107019457] [2023-12-25 15:12:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:12:50,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:12:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:12:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:12:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:12:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107019457] [2023-12-25 15:12:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107019457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:12:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:12:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 15:12:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353685129] [2023-12-25 15:12:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:12:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 15:12:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:12:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 15:12:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:12:59,083 INFO L87 Difference]: Start difference. First operand 2478 states and 3827 transitions. Second operand has 11 states, 11 states have (on average 70.0909090909091) internal successors, (771), 10 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:00,623 INFO L93 Difference]: Finished difference Result 5322 states and 8242 transitions. [2023-12-25 15:13:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 15:13:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 70.0909090909091) internal successors, (771), 10 states have internal predecessors, (771), 0 states have call successors, (0), 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 771 [2023-12-25 15:13:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:00,628 INFO L225 Difference]: With dead ends: 5322 [2023-12-25 15:13:00,628 INFO L226 Difference]: Without dead ends: 3454 [2023-12-25 15:13:00,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-25 15:13:00,630 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 7049 mSDsluCounter, 11644 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7049 SdHoareTripleChecker+Valid, 13307 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:00,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7049 Valid, 13307 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 15:13:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2023-12-25 15:13:00,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 2496. [2023-12-25 15:13:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.5450901803607215) internal successors, (3855), 2495 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3855 transitions. [2023-12-25 15:13:00,661 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3855 transitions. Word has length 771 [2023-12-25 15:13:00,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:00,662 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 3855 transitions. [2023-12-25 15:13:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.0909090909091) internal successors, (771), 10 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:00,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3855 transitions. [2023-12-25 15:13:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:00,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:00,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:00,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-25 15:13:00,667 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:00,668 INFO L85 PathProgramCache]: Analyzing trace with hash -618161134, now seen corresponding path program 1 times [2023-12-25 15:13:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696483632] [2023-12-25 15:13:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696483632] [2023-12-25 15:13:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696483632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:02,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:02,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:13:02,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43619216] [2023-12-25 15:13:02,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 15:13:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 15:13:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:13:02,705 INFO L87 Difference]: Start difference. First operand 2496 states and 3855 transitions. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:02,743 INFO L93 Difference]: Finished difference Result 4359 states and 6687 transitions. [2023-12-25 15:13:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 15:13:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:02,745 INFO L225 Difference]: With dead ends: 4359 [2023-12-25 15:13:02,745 INFO L226 Difference]: Without dead ends: 2505 [2023-12-25 15:13:02,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 15:13:02,747 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:02,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5183 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 15:13:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-12-25 15:13:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2502. [2023-12-25 15:13:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.543782487005198) internal successors, (3861), 2501 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3861 transitions. [2023-12-25 15:13:02,773 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3861 transitions. Word has length 772 [2023-12-25 15:13:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:02,774 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3861 transitions. [2023-12-25 15:13:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3861 transitions. [2023-12-25 15:13:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:02,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:02,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:02,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-25 15:13:02,779 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:02,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1959085816, now seen corresponding path program 1 times [2023-12-25 15:13:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469146576] [2023-12-25 15:13:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:07,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469146576] [2023-12-25 15:13:07,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469146576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:07,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:07,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951983651] [2023-12-25 15:13:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:07,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:07,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:07,910 INFO L87 Difference]: Start difference. First operand 2502 states and 3861 transitions. Second operand has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:08,346 INFO L93 Difference]: Finished difference Result 4400 states and 6755 transitions. [2023-12-25 15:13:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:08,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:08,349 INFO L225 Difference]: With dead ends: 4400 [2023-12-25 15:13:08,349 INFO L226 Difference]: Without dead ends: 2554 [2023-12-25 15:13:08,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:08,351 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 5929 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5929 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:08,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5929 Valid, 4819 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2023-12-25 15:13:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2502. [2023-12-25 15:13:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.5433826469412235) internal successors, (3860), 2501 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3860 transitions. [2023-12-25 15:13:08,375 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3860 transitions. Word has length 772 [2023-12-25 15:13:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:08,376 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3860 transitions. [2023-12-25 15:13:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3860 transitions. [2023-12-25 15:13:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:08,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:08,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-25 15:13:08,381 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:08,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash 929913978, now seen corresponding path program 1 times [2023-12-25 15:13:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674517489] [2023-12-25 15:13:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:13,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674517489] [2023-12-25 15:13:13,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674517489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:13,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:13,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:13,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092650292] [2023-12-25 15:13:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:13,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:13,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:13,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:13,392 INFO L87 Difference]: Start difference. First operand 2502 states and 3860 transitions. Second operand has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:13,844 INFO L93 Difference]: Finished difference Result 4238 states and 6490 transitions. [2023-12-25 15:13:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:13,847 INFO L225 Difference]: With dead ends: 4238 [2023-12-25 15:13:13,847 INFO L226 Difference]: Without dead ends: 2554 [2023-12-25 15:13:13,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:13,849 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 4177 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:13,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4177 Valid, 4819 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2023-12-25 15:13:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2502. [2023-12-25 15:13:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.542982806877249) internal successors, (3859), 2501 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3859 transitions. [2023-12-25 15:13:13,871 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3859 transitions. Word has length 772 [2023-12-25 15:13:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:13,872 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3859 transitions. [2023-12-25 15:13:13,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3859 transitions. [2023-12-25 15:13:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:13,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:13,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:13,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-25 15:13:13,877 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:13,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1562917448, now seen corresponding path program 1 times [2023-12-25 15:13:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034788021] [2023-12-25 15:13:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:13,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:18,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034788021] [2023-12-25 15:13:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034788021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:18,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:18,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180089771] [2023-12-25 15:13:18,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:18,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:18,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:18,564 INFO L87 Difference]: Start difference. First operand 2502 states and 3859 transitions. Second operand has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:19,045 INFO L93 Difference]: Finished difference Result 4235 states and 6485 transitions. [2023-12-25 15:13:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:19,048 INFO L225 Difference]: With dead ends: 4235 [2023-12-25 15:13:19,048 INFO L226 Difference]: Without dead ends: 2554 [2023-12-25 15:13:19,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:19,049 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 7275 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7275 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:19,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7275 Valid, 4819 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2023-12-25 15:13:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2502. [2023-12-25 15:13:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.5425829668132747) internal successors, (3858), 2501 states have internal predecessors, (3858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3858 transitions. [2023-12-25 15:13:19,076 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3858 transitions. Word has length 772 [2023-12-25 15:13:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3858 transitions. [2023-12-25 15:13:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3858 transitions. [2023-12-25 15:13:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:19,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:19,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:19,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-25 15:13:19,082 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:19,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 290592058, now seen corresponding path program 1 times [2023-12-25 15:13:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334535018] [2023-12-25 15:13:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:24,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:24,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334535018] [2023-12-25 15:13:24,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334535018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:24,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:24,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:13:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46686344] [2023-12-25 15:13:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:24,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:13:24,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:13:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:24,276 INFO L87 Difference]: Start difference. First operand 2502 states and 3858 transitions. Second operand has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:24,800 INFO L93 Difference]: Finished difference Result 4067 states and 6214 transitions. [2023-12-25 15:13:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:24,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:24,803 INFO L225 Difference]: With dead ends: 4067 [2023-12-25 15:13:24,803 INFO L226 Difference]: Without dead ends: 2554 [2023-12-25 15:13:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:24,804 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 5718 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:24,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5718 Valid, 4819 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 15:13:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2023-12-25 15:13:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2502. [2023-12-25 15:13:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.5421831267493002) internal successors, (3857), 2501 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3857 transitions. [2023-12-25 15:13:24,832 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3857 transitions. Word has length 772 [2023-12-25 15:13:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3857 transitions. [2023-12-25 15:13:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.66666666666666) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3857 transitions. [2023-12-25 15:13:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:24,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:24,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-25 15:13:24,837 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:24,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -139066248, now seen corresponding path program 1 times [2023-12-25 15:13:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547333515] [2023-12-25 15:13:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547333515] [2023-12-25 15:13:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547333515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:29,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:13:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284280867] [2023-12-25 15:13:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:29,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:13:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:13:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:13:29,579 INFO L87 Difference]: Start difference. First operand 2502 states and 3857 transitions. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:30,007 INFO L93 Difference]: Finished difference Result 4064 states and 6209 transitions. [2023-12-25 15:13:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:13:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:30,010 INFO L225 Difference]: With dead ends: 4064 [2023-12-25 15:13:30,010 INFO L226 Difference]: Without dead ends: 2554 [2023-12-25 15:13:30,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:13:30,012 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 3428 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:30,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 4819 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 15:13:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2023-12-25 15:13:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2502. [2023-12-25 15:13:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.5417832866853258) internal successors, (3856), 2501 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3856 transitions. [2023-12-25 15:13:30,034 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3856 transitions. Word has length 772 [2023-12-25 15:13:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:30,035 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3856 transitions. [2023-12-25 15:13:30,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3856 transitions. [2023-12-25 15:13:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-12-25 15:13:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:30,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-25 15:13:30,040 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:30,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 722767354, now seen corresponding path program 1 times [2023-12-25 15:13:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879014974] [2023-12-25 15:13:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:30,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:13:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:13:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:13:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:13:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879014974] [2023-12-25 15:13:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879014974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:13:45,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:13:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:13:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753905139] [2023-12-25 15:13:45,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:13:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:13:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:13:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:13:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:13:45,303 INFO L87 Difference]: Start difference. First operand 2502 states and 3856 transitions. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:13:45,712 INFO L93 Difference]: Finished difference Result 5458 states and 8261 transitions. [2023-12-25 15:13:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:13:45,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 772 [2023-12-25 15:13:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:13:45,716 INFO L225 Difference]: With dead ends: 5458 [2023-12-25 15:13:45,716 INFO L226 Difference]: Without dead ends: 3592 [2023-12-25 15:13:45,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:13:45,717 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 6538 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6538 SdHoareTripleChecker+Valid, 5895 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:13:45,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6538 Valid, 5895 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:13:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2023-12-25 15:13:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 2498. [2023-12-25 15:13:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2497 states have (on average 1.541049259110933) internal successors, (3848), 2497 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3848 transitions. [2023-12-25 15:13:45,743 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3848 transitions. Word has length 772 [2023-12-25 15:13:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:13:45,744 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3848 transitions. [2023-12-25 15:13:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:13:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3848 transitions. [2023-12-25 15:13:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-25 15:13:45,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:13:45,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:13:45,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-25 15:13:45,749 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:13:45,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:13:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash 434100618, now seen corresponding path program 1 times [2023-12-25 15:13:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:13:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611508777] [2023-12-25 15:13:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:13:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:14:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:14:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:14:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:14:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611508777] [2023-12-25 15:14:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611508777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:14:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:14:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:14:10,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407999024] [2023-12-25 15:14:10,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:14:10,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:14:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:14:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:14:10,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:14:10,483 INFO L87 Difference]: Start difference. First operand 2498 states and 3848 transitions. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:14:10,858 INFO L93 Difference]: Finished difference Result 5468 states and 8272 transitions. [2023-12-25 15:14:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:14:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 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 773 [2023-12-25 15:14:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:14:10,861 INFO L225 Difference]: With dead ends: 5468 [2023-12-25 15:14:10,861 INFO L226 Difference]: Without dead ends: 3151 [2023-12-25 15:14:10,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:14:10,863 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 6091 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6091 SdHoareTripleChecker+Valid, 5156 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:14:10,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6091 Valid, 5156 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:14:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2023-12-25 15:14:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2498. [2023-12-25 15:14:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2497 states have (on average 1.5402482979575491) internal successors, (3846), 2497 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3846 transitions. [2023-12-25 15:14:10,926 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3846 transitions. Word has length 773 [2023-12-25 15:14:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:14:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3846 transitions. [2023-12-25 15:14:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3846 transitions. [2023-12-25 15:14:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-25 15:14:10,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:14:10,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:14:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-25 15:14:10,933 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:14:10,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:14:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1630174400, now seen corresponding path program 1 times [2023-12-25 15:14:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:14:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712284439] [2023-12-25 15:14:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:14:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:14:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:14:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:14:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712284439] [2023-12-25 15:14:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712284439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:14:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:14:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 15:14:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458032856] [2023-12-25 15:14:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:14:13,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:14:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:14:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:14:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:14:13,066 INFO L87 Difference]: Start difference. First operand 2498 states and 3846 transitions. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:14:14,371 INFO L93 Difference]: Finished difference Result 8239 states and 12713 transitions. [2023-12-25 15:14:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:14:14,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 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 774 [2023-12-25 15:14:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:14:14,375 INFO L225 Difference]: With dead ends: 8239 [2023-12-25 15:14:14,375 INFO L226 Difference]: Without dead ends: 3959 [2023-12-25 15:14:14,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-25 15:14:14,378 INFO L413 NwaCegarLoop]: 2236 mSDtfsCounter, 3752 mSDsluCounter, 8353 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 10589 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 15:14:14,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3752 Valid, 10589 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 15:14:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2023-12-25 15:14:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 2500. [2023-12-25 15:14:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5394157663065227) internal successors, (3847), 2499 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3847 transitions. [2023-12-25 15:14:14,410 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3847 transitions. Word has length 774 [2023-12-25 15:14:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:14:14,411 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3847 transitions. [2023-12-25 15:14:14,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3847 transitions. [2023-12-25 15:14:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-25 15:14:14,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:14:14,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:14:14,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-25 15:14:14,417 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:14:14,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:14:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash -519111760, now seen corresponding path program 1 times [2023-12-25 15:14:14,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:14:14,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374179902] [2023-12-25 15:14:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:14,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:14:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:14:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:14:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:14:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374179902] [2023-12-25 15:14:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374179902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:14:37,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:14:37,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:14:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816495060] [2023-12-25 15:14:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:14:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:14:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:14:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:14:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:14:37,157 INFO L87 Difference]: Start difference. First operand 2500 states and 3847 transitions. Second operand has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:14:38,211 INFO L93 Difference]: Finished difference Result 4865 states and 7504 transitions. [2023-12-25 15:14:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:14:38,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 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 775 [2023-12-25 15:14:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:14:38,214 INFO L225 Difference]: With dead ends: 4865 [2023-12-25 15:14:38,214 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:14:38,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:14:38,216 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 5873 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5873 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:14:38,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5873 Valid, 4090 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 15:14:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:14:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:14:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.539015606242497) internal successors, (3846), 2499 states have internal predecessors, (3846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3846 transitions. [2023-12-25 15:14:38,242 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3846 transitions. Word has length 775 [2023-12-25 15:14:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:14:38,242 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3846 transitions. [2023-12-25 15:14:38,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:14:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3846 transitions. [2023-12-25 15:14:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-25 15:14:38,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:14:38,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:14:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-25 15:14:38,248 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:14:38,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:14:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1834082778, now seen corresponding path program 1 times [2023-12-25 15:14:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:14:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150531501] [2023-12-25 15:14:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:14:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:15:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:15:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:15:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:15:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150531501] [2023-12-25 15:15:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150531501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:15:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:15:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:15:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398544597] [2023-12-25 15:15:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:15:06,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:15:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:15:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:15:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:15:06,049 INFO L87 Difference]: Start difference. First operand 2500 states and 3846 transitions. Second operand has 8 states, 8 states have (on average 97.0) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:15:08,638 INFO L93 Difference]: Finished difference Result 6609 states and 10138 transitions. [2023-12-25 15:15:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:15:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 97.0) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 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 776 [2023-12-25 15:15:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:15:08,643 INFO L225 Difference]: With dead ends: 6609 [2023-12-25 15:15:08,643 INFO L226 Difference]: Without dead ends: 4920 [2023-12-25 15:15:08,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-25 15:15:08,645 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 10885 mSDsluCounter, 4501 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10885 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:15:08,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10885 Valid, 5713 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3143 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 15:15:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-25 15:15:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4811. [2023-12-25 15:15:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4810 states have (on average 1.5413721413721413) internal successors, (7414), 4810 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7414 transitions. [2023-12-25 15:15:08,696 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7414 transitions. Word has length 776 [2023-12-25 15:15:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:15:08,696 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 7414 transitions. [2023-12-25 15:15:08,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.0) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7414 transitions. [2023-12-25 15:15:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-25 15:15:08,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:15:08,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:15:08,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-25 15:15:08,703 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:15:08,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:15:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1495579608, now seen corresponding path program 1 times [2023-12-25 15:15:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:15:08,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782222378] [2023-12-25 15:15:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:15:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:15:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:15:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:15:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782222378] [2023-12-25 15:15:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782222378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:15:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:15:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:15:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413226551] [2023-12-25 15:15:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:15:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:15:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:15:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:15:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:15:37,786 INFO L87 Difference]: Start difference. First operand 4811 states and 7414 transitions. Second operand has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:15:41,032 INFO L93 Difference]: Finished difference Result 6554 states and 10051 transitions. [2023-12-25 15:15:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:15:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 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 776 [2023-12-25 15:15:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:15:41,038 INFO L225 Difference]: With dead ends: 6554 [2023-12-25 15:15:41,038 INFO L226 Difference]: Without dead ends: 5036 [2023-12-25 15:15:41,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-25 15:15:41,040 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 8338 mSDsluCounter, 7189 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8338 SdHoareTripleChecker+Valid, 8406 SdHoareTripleChecker+Invalid, 3934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:15:41,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8338 Valid, 8406 Invalid, 3934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 15:15:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-12-25 15:15:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4811. [2023-12-25 15:15:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4810 states have (on average 1.5411642411642412) internal successors, (7413), 4810 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7413 transitions. [2023-12-25 15:15:41,101 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7413 transitions. Word has length 776 [2023-12-25 15:15:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:15:41,102 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 7413 transitions. [2023-12-25 15:15:41,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:15:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7413 transitions. [2023-12-25 15:15:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-25 15:15:41,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:15:41,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:15:41,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-25 15:15:41,108 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:15:41,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:15:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1851335722, now seen corresponding path program 1 times [2023-12-25 15:15:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:15:41,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307440589] [2023-12-25 15:15:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:15:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:16:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:16:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:16:06,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:16:06,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307440589] [2023-12-25 15:16:06,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307440589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 15:16:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427239305] [2023-12-25 15:16:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:06,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:16:06,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:16:06,047 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) [2023-12-25 15:16:06,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 15:16:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:16:07,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 7260 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 15:16:07,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:16:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:16:09,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:16:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427239305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:16:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 15:16:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2023-12-25 15:16:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640246590] [2023-12-25 15:16:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:16:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:16:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:16:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:16:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:16:09,694 INFO L87 Difference]: Start difference. First operand 4811 states and 7413 transitions. Second operand has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:16:12,505 INFO L93 Difference]: Finished difference Result 10723 states and 16228 transitions. [2023-12-25 15:16:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:16:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 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 776 [2023-12-25 15:16:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:16:12,513 INFO L225 Difference]: With dead ends: 10723 [2023-12-25 15:16:12,513 INFO L226 Difference]: Without dead ends: 7059 [2023-12-25 15:16:12,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:16:12,517 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 9308 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9308 SdHoareTripleChecker+Valid, 6363 SdHoareTripleChecker+Invalid, 3986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:16:12,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9308 Valid, 6363 Invalid, 3986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-25 15:16:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2023-12-25 15:16:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 4811. [2023-12-25 15:16:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4810 states have (on average 1.5403326403326403) internal successors, (7409), 4810 states have internal predecessors, (7409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7409 transitions. [2023-12-25 15:16:12,578 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7409 transitions. Word has length 776 [2023-12-25 15:16:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:16:12,578 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 7409 transitions. [2023-12-25 15:16:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7409 transitions. [2023-12-25 15:16:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-12-25 15:16:12,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:16:12,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:16:12,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 15:16:12,785 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,SelfDestructingSolverStorable72 [2023-12-25 15:16:12,785 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:16:12,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:16:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -284359812, now seen corresponding path program 1 times [2023-12-25 15:16:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:16:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632812342] [2023-12-25 15:16:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:16:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:16:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:16:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:16:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632812342] [2023-12-25 15:16:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632812342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:16:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:16:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:16:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984331710] [2023-12-25 15:16:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:16:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:16:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:16:37,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:16:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:16:37,042 INFO L87 Difference]: Start difference. First operand 4811 states and 7409 transitions. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:16:38,591 INFO L93 Difference]: Finished difference Result 4865 states and 7496 transitions. [2023-12-25 15:16:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:16:38,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 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 777 [2023-12-25 15:16:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:16:38,594 INFO L225 Difference]: With dead ends: 4865 [2023-12-25 15:16:38,594 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:16:38,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:16:38,596 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 4479 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:16:38,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 3256 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 15:16:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:16:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:16:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5378151260504203) internal successors, (3843), 2499 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3843 transitions. [2023-12-25 15:16:38,629 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3843 transitions. Word has length 777 [2023-12-25 15:16:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:16:38,629 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3843 transitions. [2023-12-25 15:16:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:16:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3843 transitions. [2023-12-25 15:16:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-12-25 15:16:38,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:16:38,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:16:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-25 15:16:38,635 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:16:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:16:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash -425477194, now seen corresponding path program 1 times [2023-12-25 15:16:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:16:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580299770] [2023-12-25 15:16:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:16:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:17:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:17:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:17:01,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:17:01,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580299770] [2023-12-25 15:17:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580299770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:17:01,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:17:01,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:17:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063129327] [2023-12-25 15:17:01,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:17:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:17:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:17:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:17:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:17:01,763 INFO L87 Difference]: Start difference. First operand 2500 states and 3843 transitions. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:17:02,896 INFO L93 Difference]: Finished difference Result 4850 states and 7473 transitions. [2023-12-25 15:17:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:17:02,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 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 777 [2023-12-25 15:17:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:17:02,900 INFO L225 Difference]: With dead ends: 4850 [2023-12-25 15:17:02,900 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:17:02,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:17:02,902 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 5839 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5839 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 15:17:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5839 Valid, 4033 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 15:17:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:17:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:17:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5374149659863945) internal successors, (3842), 2499 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3842 transitions. [2023-12-25 15:17:02,934 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3842 transitions. Word has length 777 [2023-12-25 15:17:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:17:02,934 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3842 transitions. [2023-12-25 15:17:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3842 transitions. [2023-12-25 15:17:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-12-25 15:17:02,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:17:02,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:17:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-25 15:17:02,939 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:17:02,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:17:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash -884609870, now seen corresponding path program 1 times [2023-12-25 15:17:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:17:02,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125407267] [2023-12-25 15:17:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:17:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:17:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:17:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:17:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:17:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125407267] [2023-12-25 15:17:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125407267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:17:30,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:17:30,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 15:17:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079401866] [2023-12-25 15:17:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:17:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 15:17:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:17:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 15:17:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:17:30,351 INFO L87 Difference]: Start difference. First operand 2500 states and 3842 transitions. Second operand has 8 states, 8 states have (on average 97.25) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:17:32,996 INFO L93 Difference]: Finished difference Result 6594 states and 10107 transitions. [2023-12-25 15:17:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 15:17:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 97.25) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 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 778 [2023-12-25 15:17:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:17:33,001 INFO L225 Difference]: With dead ends: 6594 [2023-12-25 15:17:33,002 INFO L226 Difference]: Without dead ends: 4905 [2023-12-25 15:17:33,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-25 15:17:33,003 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 10803 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10803 SdHoareTripleChecker+Valid, 5680 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:17:33,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10803 Valid, 5680 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 15:17:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2023-12-25 15:17:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4796. [2023-12-25 15:17:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 1.5397288842544317) internal successors, (7383), 4795 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7383 transitions. [2023-12-25 15:17:33,056 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7383 transitions. Word has length 778 [2023-12-25 15:17:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:17:33,057 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 7383 transitions. [2023-12-25 15:17:33,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.25) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:17:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7383 transitions. [2023-12-25 15:17:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-12-25 15:17:33,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:17:33,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:17:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-25 15:17:33,063 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:17:33,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:17:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash -546106700, now seen corresponding path program 1 times [2023-12-25 15:17:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:17:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582860321] [2023-12-25 15:17:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:17:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:17:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:18:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:18:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:18:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582860321] [2023-12-25 15:18:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582860321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:18:00,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:18:00,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 15:18:00,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903590658] [2023-12-25 15:18:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:18:00,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 15:18:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:18:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 15:18:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 15:18:00,837 INFO L87 Difference]: Start difference. First operand 4796 states and 7383 transitions. Second operand has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:18:06,447 INFO L93 Difference]: Finished difference Result 9563 states and 14548 transitions. [2023-12-25 15:18:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 15:18:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 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 778 [2023-12-25 15:18:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:18:06,455 INFO L225 Difference]: With dead ends: 9563 [2023-12-25 15:18:06,455 INFO L226 Difference]: Without dead ends: 8045 [2023-12-25 15:18:06,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 15:18:06,458 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 15675 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 8794 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15675 SdHoareTripleChecker+Valid, 14625 SdHoareTripleChecker+Invalid, 8801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:18:06,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15675 Valid, 14625 Invalid, 8801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 8794 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-25 15:18:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2023-12-25 15:18:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 4796. [2023-12-25 15:18:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 1.5393117831074035) internal successors, (7381), 4795 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7381 transitions. [2023-12-25 15:18:06,562 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7381 transitions. Word has length 778 [2023-12-25 15:18:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:18:06,562 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 7381 transitions. [2023-12-25 15:18:06,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7381 transitions. [2023-12-25 15:18:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-12-25 15:18:06,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:18:06,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:18:06,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-25 15:18:06,568 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:18:06,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:18:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1494158666, now seen corresponding path program 1 times [2023-12-25 15:18:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:18:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013967086] [2023-12-25 15:18:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:18:06,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:18:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:18:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:18:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:18:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013967086] [2023-12-25 15:18:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013967086] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 15:18:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096661568] [2023-12-25 15:18:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:18:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:18:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:18:31,804 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) [2023-12-25 15:18:31,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 15:18:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:18:33,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 7267 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 15:18:33,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:18:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:18:35,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:18:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096661568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:18:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 15:18:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2023-12-25 15:18:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644435719] [2023-12-25 15:18:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:18:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:18:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:18:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:18:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:18:35,015 INFO L87 Difference]: Start difference. First operand 4796 states and 7381 transitions. Second operand has 10 states, 10 states have (on average 77.8) internal successors, (778), 9 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:18:37,629 INFO L93 Difference]: Finished difference Result 10708 states and 16201 transitions. [2023-12-25 15:18:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:18:37,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 77.8) internal successors, (778), 9 states have internal predecessors, (778), 0 states have call successors, (0), 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 778 [2023-12-25 15:18:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:18:37,637 INFO L225 Difference]: With dead ends: 10708 [2023-12-25 15:18:37,637 INFO L226 Difference]: Without dead ends: 7152 [2023-12-25 15:18:37,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:18:37,640 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 7981 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 4016 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7981 SdHoareTripleChecker+Valid, 6403 SdHoareTripleChecker+Invalid, 4017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 15:18:37,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7981 Valid, 6403 Invalid, 4017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4016 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 15:18:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2023-12-25 15:18:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 4796. [2023-12-25 15:18:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 1.5384775808133473) internal successors, (7377), 4795 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7377 transitions. [2023-12-25 15:18:37,695 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7377 transitions. Word has length 778 [2023-12-25 15:18:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:18:37,695 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 7377 transitions. [2023-12-25 15:18:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.8) internal successors, (778), 9 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:18:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7377 transitions. [2023-12-25 15:18:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-12-25 15:18:37,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:18:37,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:18:37,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 15:18:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:18:37,902 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:18:37,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:18:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1356979688, now seen corresponding path program 1 times [2023-12-25 15:18:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:18:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832842925] [2023-12-25 15:18:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:18:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:18:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:19:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:19:03,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:19:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832842925] [2023-12-25 15:19:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832842925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 15:19:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476646782] [2023-12-25 15:19:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:19:03,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:19:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 15:19:03,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 15:19:03,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 15:19:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:19:04,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 7270 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 15:19:04,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 15:19:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:19:06,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 15:19:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476646782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:19:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 15:19:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2023-12-25 15:19:06,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473309569] [2023-12-25 15:19:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:19:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:19:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:19:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:19:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 15:19:06,617 INFO L87 Difference]: Start difference. First operand 4796 states and 7377 transitions. Second operand has 10 states, 10 states have (on average 77.9) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:19:09,465 INFO L93 Difference]: Finished difference Result 10672 states and 16149 transitions. [2023-12-25 15:19:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 15:19:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 77.9) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 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 779 [2023-12-25 15:19:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:19:09,471 INFO L225 Difference]: With dead ends: 10672 [2023-12-25 15:19:09,472 INFO L226 Difference]: Without dead ends: 7338 [2023-12-25 15:19:09,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-12-25 15:19:09,475 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 8065 mSDsluCounter, 5592 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8065 SdHoareTripleChecker+Valid, 7292 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:19:09,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8065 Valid, 7292 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-25 15:19:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2023-12-25 15:19:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 4796. [2023-12-25 15:19:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 1.537643378519291) internal successors, (7373), 4795 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7373 transitions. [2023-12-25 15:19:09,577 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7373 transitions. Word has length 779 [2023-12-25 15:19:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:19:09,577 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 7373 transitions. [2023-12-25 15:19:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.9) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7373 transitions. [2023-12-25 15:19:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-12-25 15:19:09,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:19:09,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:19:09,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 15:19:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 15:19:09,784 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:19:09,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:19:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1985251168, now seen corresponding path program 1 times [2023-12-25 15:19:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:19:09,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078970279] [2023-12-25 15:19:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:19:09,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:19:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:19:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:19:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:19:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078970279] [2023-12-25 15:19:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078970279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:19:33,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:19:33,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:19:33,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738137198] [2023-12-25 15:19:33,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:19:33,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:19:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:19:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:19:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:19:33,372 INFO L87 Difference]: Start difference. First operand 4796 states and 7373 transitions. Second operand has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:19:34,971 INFO L93 Difference]: Finished difference Result 4850 states and 7460 transitions. [2023-12-25 15:19:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:19:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 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 780 [2023-12-25 15:19:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:19:34,974 INFO L225 Difference]: With dead ends: 4850 [2023-12-25 15:19:34,974 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:19:34,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:19:34,976 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 4456 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:19:34,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 3196 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 15:19:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:19:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:19:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5354141656662665) internal successors, (3837), 2499 states have internal predecessors, (3837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3837 transitions. [2023-12-25 15:19:34,999 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3837 transitions. Word has length 780 [2023-12-25 15:19:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:19:34,999 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3837 transitions. [2023-12-25 15:19:34,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3837 transitions. [2023-12-25 15:19:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-12-25 15:19:35,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:19:35,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:19:35,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-25 15:19:35,005 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:19:35,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:19:35,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1118431582, now seen corresponding path program 1 times [2023-12-25 15:19:35,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:19:35,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686851021] [2023-12-25 15:19:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:19:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:19:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:19:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:19:58,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:19:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686851021] [2023-12-25 15:19:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686851021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:19:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:19:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:19:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170749686] [2023-12-25 15:19:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:19:58,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:19:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:19:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:19:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:19:58,402 INFO L87 Difference]: Start difference. First operand 2500 states and 3837 transitions. Second operand has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:19:58,727 INFO L93 Difference]: Finished difference Result 5474 states and 8259 transitions. [2023-12-25 15:19:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:19:58,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 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 780 [2023-12-25 15:19:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:19:58,730 INFO L225 Difference]: With dead ends: 5474 [2023-12-25 15:19:58,730 INFO L226 Difference]: Without dead ends: 3203 [2023-12-25 15:19:58,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:19:58,732 INFO L413 NwaCegarLoop]: 1825 mSDtfsCounter, 6103 mSDsluCounter, 3402 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6103 SdHoareTripleChecker+Valid, 5227 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:19:58,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6103 Valid, 5227 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:19:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2023-12-25 15:19:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2500. [2023-12-25 15:19:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5346138455382152) internal successors, (3835), 2499 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3835 transitions. [2023-12-25 15:19:58,756 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3835 transitions. Word has length 780 [2023-12-25 15:19:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:19:58,756 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3835 transitions. [2023-12-25 15:19:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:19:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3835 transitions. [2023-12-25 15:19:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-25 15:19:58,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:19:58,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:19:58,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-25 15:19:58,761 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:19:58,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:19:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2088064242, now seen corresponding path program 1 times [2023-12-25 15:19:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:19:58,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373678203] [2023-12-25 15:19:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:19:58,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:20:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:20:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:20:23,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:20:23,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373678203] [2023-12-25 15:20:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373678203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:20:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:20:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:20:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880309784] [2023-12-25 15:20:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:20:23,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:20:23,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:20:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:20:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:20:23,962 INFO L87 Difference]: Start difference. First operand 2500 states and 3835 transitions. Second operand has 5 states, 5 states have (on average 156.2) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:24,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:20:24,293 INFO L93 Difference]: Finished difference Result 5474 states and 8257 transitions. [2023-12-25 15:20:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:20:24,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.2) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 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 781 [2023-12-25 15:20:24,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:20:24,296 INFO L225 Difference]: With dead ends: 5474 [2023-12-25 15:20:24,296 INFO L226 Difference]: Without dead ends: 3269 [2023-12-25 15:20:24,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:20:24,298 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 6164 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6164 SdHoareTripleChecker+Valid, 5337 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:20:24,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6164 Valid, 5337 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:20:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2023-12-25 15:20:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2500. [2023-12-25 15:20:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5338135254101641) internal successors, (3833), 2499 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3833 transitions. [2023-12-25 15:20:24,357 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3833 transitions. Word has length 781 [2023-12-25 15:20:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:20:24,357 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3833 transitions. [2023-12-25 15:20:24,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.2) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3833 transitions. [2023-12-25 15:20:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-25 15:20:24,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:20:24,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:20:24,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-25 15:20:24,362 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:20:24,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:20:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash 383256730, now seen corresponding path program 1 times [2023-12-25 15:20:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:20:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789551323] [2023-12-25 15:20:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:20:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:20:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:20:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:20:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:20:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789551323] [2023-12-25 15:20:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789551323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:20:49,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:20:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:20:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2601196] [2023-12-25 15:20:49,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:20:49,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:20:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:20:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:20:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:20:49,453 INFO L87 Difference]: Start difference. First operand 2500 states and 3833 transitions. Second operand has 5 states, 5 states have (on average 156.4) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:20:49,811 INFO L93 Difference]: Finished difference Result 5474 states and 8255 transitions. [2023-12-25 15:20:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:20:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.4) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 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 782 [2023-12-25 15:20:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:20:49,814 INFO L225 Difference]: With dead ends: 5474 [2023-12-25 15:20:49,814 INFO L226 Difference]: Without dead ends: 3338 [2023-12-25 15:20:49,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 15:20:49,816 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 6228 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6228 SdHoareTripleChecker+Valid, 5449 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 15:20:49,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6228 Valid, 5449 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 15:20:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2023-12-25 15:20:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2500. [2023-12-25 15:20:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5330132052821128) internal successors, (3831), 2499 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3831 transitions. [2023-12-25 15:20:49,840 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3831 transitions. Word has length 782 [2023-12-25 15:20:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:20:49,840 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3831 transitions. [2023-12-25 15:20:49,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.4) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:20:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3831 transitions. [2023-12-25 15:20:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-12-25 15:20:49,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:20:49,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:20:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-25 15:20:49,846 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:20:49,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:20:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1669021732, now seen corresponding path program 1 times [2023-12-25 15:20:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:20:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620614144] [2023-12-25 15:20:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:20:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:21:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:21:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:21:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:21:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620614144] [2023-12-25 15:21:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620614144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:21:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:21:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:21:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454579161] [2023-12-25 15:21:13,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:21:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:21:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:21:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:21:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:21:13,732 INFO L87 Difference]: Start difference. First operand 2500 states and 3831 transitions. Second operand has 6 states, 6 states have (on average 130.5) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:21:14,848 INFO L93 Difference]: Finished difference Result 4670 states and 7157 transitions. [2023-12-25 15:21:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:21:14,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 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 783 [2023-12-25 15:21:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:21:14,851 INFO L225 Difference]: With dead ends: 4670 [2023-12-25 15:21:14,852 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:21:14,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:21:14,853 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 5555 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5555 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 15:21:14,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5555 Valid, 4036 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 15:21:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:21:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:21:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5326130452180873) internal successors, (3830), 2499 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3830 transitions. [2023-12-25 15:21:14,875 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3830 transitions. Word has length 783 [2023-12-25 15:21:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:21:14,875 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3830 transitions. [2023-12-25 15:21:14,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3830 transitions. [2023-12-25 15:21:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-12-25 15:21:14,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:21:14,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:21:14,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-25 15:21:14,880 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:21:14,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:21:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -664334792, now seen corresponding path program 1 times [2023-12-25 15:21:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:21:14,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573514251] [2023-12-25 15:21:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:21:14,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:21:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:21:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:21:44,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:21:44,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573514251] [2023-12-25 15:21:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573514251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:21:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:21:44,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:21:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221652709] [2023-12-25 15:21:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:21:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:21:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:21:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:21:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:21:44,767 INFO L87 Difference]: Start difference. First operand 2500 states and 3830 transitions. Second operand has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:21:49,000 INFO L93 Difference]: Finished difference Result 8165 states and 12433 transitions. [2023-12-25 15:21:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 15:21:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 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 784 [2023-12-25 15:21:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:21:49,007 INFO L225 Difference]: With dead ends: 8165 [2023-12-25 15:21:49,007 INFO L226 Difference]: Without dead ends: 6476 [2023-12-25 15:21:49,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2023-12-25 15:21:49,010 INFO L413 NwaCegarLoop]: 1873 mSDtfsCounter, 13818 mSDsluCounter, 9974 mSDsCounter, 0 mSdLazyCounter, 6849 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13818 SdHoareTripleChecker+Valid, 11847 SdHoareTripleChecker+Invalid, 6853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-25 15:21:49,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13818 Valid, 11847 Invalid, 6853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6849 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-25 15:21:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2023-12-25 15:21:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 4616. [2023-12-25 15:21:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.5313109425785483) internal successors, (7067), 4615 states have internal predecessors, (7067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 7067 transitions. [2023-12-25 15:21:49,072 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 7067 transitions. Word has length 784 [2023-12-25 15:21:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:21:49,072 INFO L495 AbstractCegarLoop]: Abstraction has 4616 states and 7067 transitions. [2023-12-25 15:21:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:21:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 7067 transitions. [2023-12-25 15:21:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-12-25 15:21:49,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:21:49,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:21:49,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-25 15:21:49,079 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:21:49,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:21:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1239328886, now seen corresponding path program 1 times [2023-12-25 15:21:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:21:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555160164] [2023-12-25 15:21:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:21:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:22:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:22:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:22:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:22:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555160164] [2023-12-25 15:22:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555160164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:22:19,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:22:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 15:22:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107392985] [2023-12-25 15:22:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:22:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 15:22:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:22:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 15:22:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-25 15:22:19,978 INFO L87 Difference]: Start difference. First operand 4616 states and 7067 transitions. Second operand has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:22:24,118 INFO L93 Difference]: Finished difference Result 7823 states and 11890 transitions. [2023-12-25 15:22:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 15:22:24,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 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 784 [2023-12-25 15:22:24,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:22:24,123 INFO L225 Difference]: With dead ends: 7823 [2023-12-25 15:22:24,123 INFO L226 Difference]: Without dead ends: 6305 [2023-12-25 15:22:24,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2023-12-25 15:22:24,126 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 12833 mSDsluCounter, 8345 mSDsCounter, 0 mSdLazyCounter, 5847 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12833 SdHoareTripleChecker+Valid, 10353 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 15:22:24,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12833 Valid, 10353 Invalid, 5851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5847 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 15:22:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6305 states. [2023-12-25 15:22:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6305 to 4616. [2023-12-25 15:22:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.5308775731310942) internal successors, (7065), 4615 states have internal predecessors, (7065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 7065 transitions. [2023-12-25 15:22:24,174 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 7065 transitions. Word has length 784 [2023-12-25 15:22:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:22:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 4616 states and 7065 transitions. [2023-12-25 15:22:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.4) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 7065 transitions. [2023-12-25 15:22:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-12-25 15:22:24,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:22:24,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:22:24,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-25 15:22:24,180 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:22:24,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:22:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash 291276920, now seen corresponding path program 1 times [2023-12-25 15:22:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:22:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728678912] [2023-12-25 15:22:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:22:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:22:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:22:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:22:53,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:22:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728678912] [2023-12-25 15:22:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728678912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:22:53,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:22:53,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 15:22:53,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717943790] [2023-12-25 15:22:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:22:53,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 15:22:53,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:22:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 15:22:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 15:22:53,342 INFO L87 Difference]: Start difference. First operand 4616 states and 7065 transitions. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:22:54,938 INFO L93 Difference]: Finished difference Result 4670 states and 7152 transitions. [2023-12-25 15:22:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 15:22:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 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 784 [2023-12-25 15:22:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:22:54,941 INFO L225 Difference]: With dead ends: 4670 [2023-12-25 15:22:54,941 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:22:54,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 15:22:54,942 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 4316 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 15:22:54,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4316 Valid, 3197 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 15:22:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:22:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:22:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.5322128851540617) internal successors, (3829), 2499 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3829 transitions. [2023-12-25 15:22:54,967 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3829 transitions. Word has length 784 [2023-12-25 15:22:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:22:54,967 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3829 transitions. [2023-12-25 15:22:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:22:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3829 transitions. [2023-12-25 15:22:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-12-25 15:22:54,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:22:54,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:22:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-12-25 15:22:54,972 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:22:54,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:22:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash -615863178, now seen corresponding path program 1 times [2023-12-25 15:22:54,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:22:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074617091] [2023-12-25 15:22:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:22:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 15:23:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 15:23:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 15:23:21,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 15:23:21,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074617091] [2023-12-25 15:23:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074617091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 15:23:21,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 15:23:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 15:23:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126350578] [2023-12-25 15:23:21,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 15:23:21,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 15:23:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 15:23:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 15:23:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 15:23:21,219 INFO L87 Difference]: Start difference. First operand 2500 states and 3829 transitions. Second operand has 6 states, 6 states have (on average 130.66666666666666) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:23:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 15:23:22,919 INFO L93 Difference]: Finished difference Result 4667 states and 7150 transitions. [2023-12-25 15:23:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 15:23:22,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 130.66666666666666) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 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 784 [2023-12-25 15:23:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 15:23:22,922 INFO L225 Difference]: With dead ends: 4667 [2023-12-25 15:23:22,922 INFO L226 Difference]: Without dead ends: 2552 [2023-12-25 15:23:22,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 15:23:22,924 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 4313 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 15:23:22,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4313 Valid, 5057 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 15:23:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-12-25 15:23:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2500. [2023-12-25 15:23:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.531812725090036) internal successors, (3828), 2499 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:23:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3828 transitions. [2023-12-25 15:23:22,947 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3828 transitions. Word has length 784 [2023-12-25 15:23:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 15:23:22,947 INFO L495 AbstractCegarLoop]: Abstraction has 2500 states and 3828 transitions. [2023-12-25 15:23:22,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.66666666666666) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 15:23:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3828 transitions. [2023-12-25 15:23:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-12-25 15:23:22,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 15:23:22,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:23:22,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-12-25 15:23:22,952 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 15:23:22,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 15:23:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1134359936, now seen corresponding path program 1 times [2023-12-25 15:23:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 15:23:22,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108911755] [2023-12-25 15:23:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 15:23:22,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-25 15:23:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-25 15:23:26,324 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 15:23:26,343 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 15:23:26,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-12-25 15:23:26,343 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 786 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [108911755] and IpTcStrategyModuleZ3 [871606426]. [2023-12-25 15:23:26,348 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 15:23:26,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 15:23:26,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 03:23:26 BoogieIcfgContainer [2023-12-25 15:23:26,351 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 15:23:26,351 INFO L158 Benchmark]: Toolchain (without parser) took 813363.91ms. Allocated memory was 181.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 126.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-25 15:23:26,351 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 133.0MB in the beginning and 133.0MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 15:23:26,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 952.06ms. Allocated memory was 181.4MB in the beginning and 289.4MB in the end (delta: 108.0MB). Free memory was 125.6MB in the beginning and 178.0MB in the end (delta: -52.4MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-25 15:23:26,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 662.17ms. Allocated memory is still 289.4MB. Free memory was 178.0MB in the beginning and 173.7MB in the end (delta: 4.3MB). Peak memory consumption was 83.3MB. Max. memory is 8.0GB. [2023-12-25 15:23:26,368 INFO L158 Benchmark]: Boogie Preprocessor took 754.38ms. Allocated memory was 289.4MB in the beginning and 574.6MB in the end (delta: 285.2MB). Free memory was 173.7MB in the beginning and 421.3MB in the end (delta: -247.6MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. [2023-12-25 15:23:26,368 INFO L158 Benchmark]: RCFGBuilder took 3899.26ms. Allocated memory was 574.6MB in the beginning and 931.1MB in the end (delta: 356.5MB). Free memory was 421.3MB in the beginning and 411.4MB in the end (delta: 9.9MB). Peak memory consumption was 371.1MB. Max. memory is 8.0GB. [2023-12-25 15:23:26,368 INFO L158 Benchmark]: TraceAbstraction took 807087.22ms. Allocated memory was 931.1MB in the beginning and 2.1GB in the end (delta: 1.2GB). Free memory was 410.9MB in the beginning and 1.8GB in the end (delta: -1.4GB). Peak memory consumption was 949.7MB. Max. memory is 8.0GB. [2023-12-25 15:23:26,369 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 133.0MB in the beginning and 133.0MB in the end (delta: 70.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 952.06ms. Allocated memory was 181.4MB in the beginning and 289.4MB in the end (delta: 108.0MB). Free memory was 125.6MB in the beginning and 178.0MB in the end (delta: -52.4MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 662.17ms. Allocated memory is still 289.4MB. Free memory was 178.0MB in the beginning and 173.7MB in the end (delta: 4.3MB). Peak memory consumption was 83.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 754.38ms. Allocated memory was 289.4MB in the beginning and 574.6MB in the end (delta: 285.2MB). Free memory was 173.7MB in the beginning and 421.3MB in the end (delta: -247.6MB). Peak memory consumption was 58.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3899.26ms. Allocated memory was 574.6MB in the beginning and 931.1MB in the end (delta: 356.5MB). Free memory was 421.3MB in the beginning and 411.4MB in the end (delta: 9.9MB). Peak memory consumption was 371.1MB. Max. memory is 8.0GB. * TraceAbstraction took 807087.22ms. Allocated memory was 931.1MB in the beginning and 2.1GB in the end (delta: 1.2GB). Free memory was 410.9MB in the beginning and 1.8GB in the end (delta: -1.4GB). Peak memory consumption was 949.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 786 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [108911755] and IpTcStrategyModuleZ3 [871606426]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1046 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 807.0s, OverallIterations: 89, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 137.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700226 SdHoareTripleChecker+Valid, 106.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 700226 mSDsluCounter, 685316 SdHoareTripleChecker+Invalid, 89.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528341 mSDsCounter, 1002 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145723 IncrementalHoareTripleChecker+Invalid, 146725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1002 mSolverCounterUnsat, 156975 mSDtfsCounter, 145723 mSolverCounterSat, 1.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4416 GetRequests, 3238 SyntacticMatches, 9 SemanticMatches, 1169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22189 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4811occurred in iteration=71, InterpolantAutomatonStates: 1019, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 88 MinimizatonAttempts, 102272 StatesRemovedByMinimization, 87 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.1s SsaConstructionTime, 494.4s SatisfiabilityAnalysisTime, 158.8s InterpolantComputationTime, 45443 NumberOfCodeBlocks, 45443 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 45351 ConstructedInterpolants, 0 QuantifiedInterpolants, 286449 SizeOfPredicates, 39 NumberOfNonLiveVariables, 28982 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 92 InterpolantComputations, 88 PerfectInterpolantSequences, 2280/2288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown