/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:17:39,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:17:39,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:17:39,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:17:39,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:17:39,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:17:39,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:17:39,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:17:39,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:17:39,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:17:39,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:17:39,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:17:39,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:17:39,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:17:39,592 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:17:39,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:17:39,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:17:39,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:17:39,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:17:39,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:17:39,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:17:39,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:17:39,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:17:39,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:17:39,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:17:39,594 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:17:39,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:17:39,594 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:17:39,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:17:39,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:17:39,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:17:39,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:17:39,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:17:39,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:17:39,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:17:39,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:17:39,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:17:39,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:17:39,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:17:39,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:17:39,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:17:39,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:17:39,801 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:17:39,802 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:17:39,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-15 23:17:40,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:17:41,003 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:17:41,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-15 23:17:41,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69f34a05/243cd5a4af544c419e7374a484f415e4/FLAGf1e60205f [2023-12-15 23:17:41,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69f34a05/243cd5a4af544c419e7374a484f415e4 [2023-12-15 23:17:41,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:17:41,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:17:41,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:17:41,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:17:41,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:17:41,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f755a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41, skipping insertion in model container [2023-12-15 23:17:41,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:17:41,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c[14371,14384] [2023-12-15 23:17:41,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:17:41,265 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:17:41,316 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c[14371,14384] [2023-12-15 23:17:41,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:17:41,327 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:17:41,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41 WrapperNode [2023-12-15 23:17:41,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:17:41,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:17:41,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:17:41,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:17:41,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,401 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 484 [2023-12-15 23:17:41,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:17:41,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:17:41,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:17:41,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:17:41,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,439 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]. [2023-12-15 23:17:41,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:17:41,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:17:41,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:17:41,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:17:41,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (1/1) ... [2023-12-15 23:17:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:17:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:17:41,499 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) [2023-12-15 23:17:41,521 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 [2023-12-15 23:17:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:17:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:17:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:17:41,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:17:41,618 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:17:41,619 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:17:41,987 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:17:42,062 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:17:42,063 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:17:42,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:17:42 BoogieIcfgContainer [2023-12-15 23:17:42,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:17:42,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:17:42,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:17:42,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:17:42,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:17:41" (1/3) ... [2023-12-15 23:17:42,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355b7a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:17:42, skipping insertion in model container [2023-12-15 23:17:42,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:17:41" (2/3) ... [2023-12-15 23:17:42,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355b7a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:17:42, skipping insertion in model container [2023-12-15 23:17:42,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:17:42" (3/3) ... [2023-12-15 23:17:42,069 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2023-12-15 23:17:42,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:17:42,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:17:42,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:17:42,123 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;@61ffeaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:17:42,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:17:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.814516129032258) internal successors, (225), 125 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:17:42,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:42,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:17:42,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:42,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1384301439, now seen corresponding path program 1 times [2023-12-15 23:17:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163033352] [2023-12-15 23:17:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163033352] [2023-12-15 23:17:42,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163033352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:17:42,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96262809] [2023-12-15 23:17:42,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:42,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:17:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:17:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:17:42,307 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.814516129032258) internal successors, (225), 125 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:42,342 INFO L93 Difference]: Finished difference Result 195 states and 344 transitions. [2023-12-15 23:17:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:17:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-15 23:17:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:42,353 INFO L225 Difference]: With dead ends: 195 [2023-12-15 23:17:42,353 INFO L226 Difference]: Without dead ends: 124 [2023-12-15 23:17:42,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:17:42,358 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:42,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-15 23:17:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-15 23:17:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.7886178861788617) internal successors, (220), 123 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 220 transitions. [2023-12-15 23:17:42,399 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 220 transitions. Word has length 34 [2023-12-15 23:17:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:42,399 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 220 transitions. [2023-12-15 23:17:42,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 220 transitions. [2023-12-15 23:17:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:17:42,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:42,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:17:42,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:17:42,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:42,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1221722115, now seen corresponding path program 1 times [2023-12-15 23:17:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901290483] [2023-12-15 23:17:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:42,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901290483] [2023-12-15 23:17:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901290483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:42,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:17:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337405699] [2023-12-15 23:17:42,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:17:42,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:17:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:42,581 INFO L87 Difference]: Start difference. First operand 124 states and 220 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:42,648 INFO L93 Difference]: Finished difference Result 193 states and 337 transitions. [2023-12-15 23:17:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:17:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-15 23:17:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:42,649 INFO L225 Difference]: With dead ends: 193 [2023-12-15 23:17:42,649 INFO L226 Difference]: Without dead ends: 124 [2023-12-15 23:17:42,650 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 [2023-12-15 23:17:42,651 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:42,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 618 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:17:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-15 23:17:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-15 23:17:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.5447154471544715) internal successors, (190), 123 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 190 transitions. [2023-12-15 23:17:42,657 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 190 transitions. Word has length 34 [2023-12-15 23:17:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:42,657 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 190 transitions. [2023-12-15 23:17:42,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 190 transitions. [2023-12-15 23:17:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:17:42,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:42,659 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] [2023-12-15 23:17:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:17:42,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 480220631, now seen corresponding path program 1 times [2023-12-15 23:17:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782226386] [2023-12-15 23:17:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:42,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782226386] [2023-12-15 23:17:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782226386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:42,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:42,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582114941] [2023-12-15 23:17:42,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:42,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:42,773 INFO L87 Difference]: Start difference. First operand 124 states and 190 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:42,812 INFO L93 Difference]: Finished difference Result 246 states and 400 transitions. [2023-12-15 23:17:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-15 23:17:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:42,817 INFO L225 Difference]: With dead ends: 246 [2023-12-15 23:17:42,817 INFO L226 Difference]: Without dead ends: 180 [2023-12-15 23:17:42,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:42,821 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 88 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:42,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 330 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-15 23:17:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-12-15 23:17:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.5819209039548023) internal successors, (280), 177 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 280 transitions. [2023-12-15 23:17:42,835 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 280 transitions. Word has length 63 [2023-12-15 23:17:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:42,835 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 280 transitions. [2023-12-15 23:17:42,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 280 transitions. [2023-12-15 23:17:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:17:42,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:42,837 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] [2023-12-15 23:17:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:17:42,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1065677961, now seen corresponding path program 1 times [2023-12-15 23:17:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478064927] [2023-12-15 23:17:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:42,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478064927] [2023-12-15 23:17:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478064927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858944282] [2023-12-15 23:17:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:42,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:42,906 INFO L87 Difference]: Start difference. First operand 178 states and 280 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:42,925 INFO L93 Difference]: Finished difference Result 402 states and 660 transitions. [2023-12-15 23:17:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-15 23:17:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:42,928 INFO L225 Difference]: With dead ends: 402 [2023-12-15 23:17:42,929 INFO L226 Difference]: Without dead ends: 282 [2023-12-15 23:17:42,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:42,933 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 90 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:42,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 342 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-15 23:17:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2023-12-15 23:17:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6236559139784945) internal successors, (453), 279 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 453 transitions. [2023-12-15 23:17:42,949 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 453 transitions. Word has length 65 [2023-12-15 23:17:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:42,950 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 453 transitions. [2023-12-15 23:17:42,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 453 transitions. [2023-12-15 23:17:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 23:17:42,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:42,952 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] [2023-12-15 23:17:42,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:17:42,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:42,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1472684379, now seen corresponding path program 1 times [2023-12-15 23:17:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702046878] [2023-12-15 23:17:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:42,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702046878] [2023-12-15 23:17:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702046878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189982912] [2023-12-15 23:17:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,076 INFO L87 Difference]: Start difference. First operand 280 states and 453 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:43,095 INFO L93 Difference]: Finished difference Result 692 states and 1151 transitions. [2023-12-15 23:17:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-15 23:17:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:43,098 INFO L225 Difference]: With dead ends: 692 [2023-12-15 23:17:43,099 INFO L226 Difference]: Without dead ends: 470 [2023-12-15 23:17:43,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,100 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 84 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:43,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 343 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-15 23:17:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2023-12-15 23:17:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.6466809421841542) internal successors, (769), 467 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) [2023-12-15 23:17:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 769 transitions. [2023-12-15 23:17:43,122 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 769 transitions. Word has length 67 [2023-12-15 23:17:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:43,123 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 769 transitions. [2023-12-15 23:17:43,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 769 transitions. [2023-12-15 23:17:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-15 23:17:43,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:43,128 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] [2023-12-15 23:17:43,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:17:43,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:43,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:43,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1702765645, now seen corresponding path program 1 times [2023-12-15 23:17:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756507521] [2023-12-15 23:17:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:43,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756507521] [2023-12-15 23:17:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756507521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:43,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200453749] [2023-12-15 23:17:43,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:43,238 INFO L87 Difference]: Start difference. First operand 468 states and 769 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:43,381 INFO L93 Difference]: Finished difference Result 1980 states and 3359 transitions. [2023-12-15 23:17:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:17:43,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-15 23:17:43,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:43,386 INFO L225 Difference]: With dead ends: 1980 [2023-12-15 23:17:43,387 INFO L226 Difference]: Without dead ends: 1570 [2023-12-15 23:17:43,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:17:43,388 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 659 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:43,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1133 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:17:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-15 23:17:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 826. [2023-12-15 23:17:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 1.6654545454545455) internal successors, (1374), 825 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1374 transitions. [2023-12-15 23:17:43,412 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1374 transitions. Word has length 69 [2023-12-15 23:17:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:43,412 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1374 transitions. [2023-12-15 23:17:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1374 transitions. [2023-12-15 23:17:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-15 23:17:43,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:43,413 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] [2023-12-15 23:17:43,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:17:43,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:43,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1183406413, now seen corresponding path program 1 times [2023-12-15 23:17:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:43,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791682649] [2023-12-15 23:17:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791682649] [2023-12-15 23:17:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791682649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:17:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761124703] [2023-12-15 23:17:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:17:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:17:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:43,484 INFO L87 Difference]: Start difference. First operand 826 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:43,560 INFO L93 Difference]: Finished difference Result 2398 states and 4060 transitions. [2023-12-15 23:17:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:17:43,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-15 23:17:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:43,567 INFO L225 Difference]: With dead ends: 2398 [2023-12-15 23:17:43,567 INFO L226 Difference]: Without dead ends: 1630 [2023-12-15 23:17:43,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:43,569 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 327 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:43,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 605 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-12-15 23:17:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1219. [2023-12-15 23:17:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.674055829228243) internal successors, (2039), 1218 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2039 transitions. [2023-12-15 23:17:43,595 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2039 transitions. Word has length 70 [2023-12-15 23:17:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:43,595 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 2039 transitions. [2023-12-15 23:17:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2039 transitions. [2023-12-15 23:17:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:17:43,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:43,597 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] [2023-12-15 23:17:43,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:17:43,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:43,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1621689265, now seen corresponding path program 1 times [2023-12-15 23:17:43,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:43,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563300216] [2023-12-15 23:17:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563300216] [2023-12-15 23:17:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563300216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606978660] [2023-12-15 23:17:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,638 INFO L87 Difference]: Start difference. First operand 1219 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:43,670 INFO L93 Difference]: Finished difference Result 2417 states and 4058 transitions. [2023-12-15 23:17:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:17:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:43,676 INFO L225 Difference]: With dead ends: 2417 [2023-12-15 23:17:43,676 INFO L226 Difference]: Without dead ends: 1747 [2023-12-15 23:17:43,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,679 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 91 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:43,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 410 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2023-12-15 23:17:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1745. [2023-12-15 23:17:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.6639908256880733) internal successors, (2902), 1744 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2902 transitions. [2023-12-15 23:17:43,742 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2902 transitions. Word has length 71 [2023-12-15 23:17:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:43,743 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2902 transitions. [2023-12-15 23:17:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2902 transitions. [2023-12-15 23:17:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:17:43,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:43,744 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] [2023-12-15 23:17:43,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:17:43,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:43,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -894960913, now seen corresponding path program 1 times [2023-12-15 23:17:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494681955] [2023-12-15 23:17:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494681955] [2023-12-15 23:17:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494681955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102413213] [2023-12-15 23:17:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,784 INFO L87 Difference]: Start difference. First operand 1745 states and 2902 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:43,823 INFO L93 Difference]: Finished difference Result 3413 states and 5698 transitions. [2023-12-15 23:17:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:17:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:43,831 INFO L225 Difference]: With dead ends: 3413 [2023-12-15 23:17:43,832 INFO L226 Difference]: Without dead ends: 2469 [2023-12-15 23:17:43,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:43,836 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 85 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:43,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 399 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2023-12-15 23:17:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2023-12-15 23:17:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.6536901865369018) internal successors, (4078), 2466 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4078 transitions. [2023-12-15 23:17:43,896 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4078 transitions. Word has length 71 [2023-12-15 23:17:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:43,897 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4078 transitions. [2023-12-15 23:17:43,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4078 transitions. [2023-12-15 23:17:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:17:43,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:43,898 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] [2023-12-15 23:17:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:17:43,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:43,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2026376138, now seen corresponding path program 1 times [2023-12-15 23:17:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144451886] [2023-12-15 23:17:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:43,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144451886] [2023-12-15 23:17:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144451886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:43,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:43,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:17:43,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300290653] [2023-12-15 23:17:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:43,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:17:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:17:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:43,962 INFO L87 Difference]: Start difference. First operand 2467 states and 4078 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:44,057 INFO L93 Difference]: Finished difference Result 7754 states and 12893 transitions. [2023-12-15 23:17:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:17:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:17:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:44,073 INFO L225 Difference]: With dead ends: 7754 [2023-12-15 23:17:44,073 INFO L226 Difference]: Without dead ends: 5403 [2023-12-15 23:17:44,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:44,078 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 326 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:44,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 602 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2023-12-15 23:17:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 3917. [2023-12-15 23:17:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 3916 states have (on average 1.646067415730337) internal successors, (6446), 3916 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 6446 transitions. [2023-12-15 23:17:44,189 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 6446 transitions. Word has length 71 [2023-12-15 23:17:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:44,189 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 6446 transitions. [2023-12-15 23:17:44,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 6446 transitions. [2023-12-15 23:17:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:17:44,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:44,190 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] [2023-12-15 23:17:44,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:17:44,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:44,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1319668305, now seen corresponding path program 1 times [2023-12-15 23:17:44,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:44,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240050415] [2023-12-15 23:17:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240050415] [2023-12-15 23:17:44,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240050415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:44,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:44,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796323862] [2023-12-15 23:17:44,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:44,229 INFO L87 Difference]: Start difference. First operand 3917 states and 6446 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:44,302 INFO L93 Difference]: Finished difference Result 8718 states and 14491 transitions. [2023-12-15 23:17:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:17:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:44,321 INFO L225 Difference]: With dead ends: 8718 [2023-12-15 23:17:44,321 INFO L226 Difference]: Without dead ends: 5892 [2023-12-15 23:17:44,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:44,328 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 97 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:44,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2023-12-15 23:17:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2023-12-15 23:17:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5889 states have (on average 1.641365257259297) internal successors, (9666), 5889 states have internal predecessors, (9666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 9666 transitions. [2023-12-15 23:17:44,503 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 9666 transitions. Word has length 71 [2023-12-15 23:17:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:44,503 INFO L495 AbstractCegarLoop]: Abstraction has 5890 states and 9666 transitions. [2023-12-15 23:17:44,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 9666 transitions. [2023-12-15 23:17:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 23:17:44,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:44,504 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] [2023-12-15 23:17:44,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:17:44,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1555031638, now seen corresponding path program 1 times [2023-12-15 23:17:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828139368] [2023-12-15 23:17:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:44,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:44,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:44,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828139368] [2023-12-15 23:17:44,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828139368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:44,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:44,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:17:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711133312] [2023-12-15 23:17:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:44,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:17:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:17:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:44,566 INFO L87 Difference]: Start difference. First operand 5890 states and 9666 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:44,749 INFO L93 Difference]: Finished difference Result 18560 states and 30532 transitions. [2023-12-15 23:17:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:17:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-15 23:17:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:44,794 INFO L225 Difference]: With dead ends: 18560 [2023-12-15 23:17:44,794 INFO L226 Difference]: Without dead ends: 12746 [2023-12-15 23:17:44,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:44,806 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 324 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:44,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 604 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12746 states. [2023-12-15 23:17:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12746 to 9275. [2023-12-15 23:17:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.6293940047444468) internal successors, (15111), 9274 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 15111 transitions. [2023-12-15 23:17:45,102 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 15111 transitions. Word has length 72 [2023-12-15 23:17:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:45,102 INFO L495 AbstractCegarLoop]: Abstraction has 9275 states and 15111 transitions. [2023-12-15 23:17:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 15111 transitions. [2023-12-15 23:17:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:17:45,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:45,104 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] [2023-12-15 23:17:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:17:45,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:45,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1739531394, now seen corresponding path program 1 times [2023-12-15 23:17:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089813908] [2023-12-15 23:17:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089813908] [2023-12-15 23:17:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089813908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572331554] [2023-12-15 23:17:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:45,230 INFO L87 Difference]: Start difference. First operand 9275 states and 15111 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:45,411 INFO L93 Difference]: Finished difference Result 18476 states and 30121 transitions. [2023-12-15 23:17:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:17:45,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-15 23:17:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:45,429 INFO L225 Difference]: With dead ends: 18476 [2023-12-15 23:17:45,429 INFO L226 Difference]: Without dead ends: 9277 [2023-12-15 23:17:45,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:17:45,439 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 169 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:45,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 498 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2023-12-15 23:17:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 9275. [2023-12-15 23:17:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.615915462583567) internal successors, (14986), 9274 states have internal predecessors, (14986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 14986 transitions. [2023-12-15 23:17:45,617 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 14986 transitions. Word has length 74 [2023-12-15 23:17:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:45,617 INFO L495 AbstractCegarLoop]: Abstraction has 9275 states and 14986 transitions. [2023-12-15 23:17:45,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 14986 transitions. [2023-12-15 23:17:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:17:45,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:45,618 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] [2023-12-15 23:17:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:17:45,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:45,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash -770026797, now seen corresponding path program 1 times [2023-12-15 23:17:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:45,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612640454] [2023-12-15 23:17:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612640454] [2023-12-15 23:17:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612640454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:45,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:45,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567534755] [2023-12-15 23:17:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:45,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:45,783 INFO L87 Difference]: Start difference. First operand 9275 states and 14986 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:46,024 INFO L93 Difference]: Finished difference Result 26568 states and 43073 transitions. [2023-12-15 23:17:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:17:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-15 23:17:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:46,057 INFO L225 Difference]: With dead ends: 26568 [2023-12-15 23:17:46,057 INFO L226 Difference]: Without dead ends: 17369 [2023-12-15 23:17:46,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:17:46,073 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 83 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:46,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 666 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:46,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17369 states. [2023-12-15 23:17:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 17367. [2023-12-15 23:17:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17367 states, 17366 states have (on average 1.6007716227110447) internal successors, (27799), 17366 states have internal predecessors, (27799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17367 states to 17367 states and 27799 transitions. [2023-12-15 23:17:46,424 INFO L78 Accepts]: Start accepts. Automaton has 17367 states and 27799 transitions. Word has length 77 [2023-12-15 23:17:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:46,424 INFO L495 AbstractCegarLoop]: Abstraction has 17367 states and 27799 transitions. [2023-12-15 23:17:46,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 17367 states and 27799 transitions. [2023-12-15 23:17:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:17:46,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:46,425 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] [2023-12-15 23:17:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:17:46,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:46,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1884453877, now seen corresponding path program 1 times [2023-12-15 23:17:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:46,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239320679] [2023-12-15 23:17:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:46,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239320679] [2023-12-15 23:17:46,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239320679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:46,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:46,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:17:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459868920] [2023-12-15 23:17:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:17:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:17:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:17:46,670 INFO L87 Difference]: Start difference. First operand 17367 states and 27799 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:46,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:46,871 INFO L93 Difference]: Finished difference Result 18455 states and 29248 transitions. [2023-12-15 23:17:46,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:17:46,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-15 23:17:46,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:46,903 INFO L225 Difference]: With dead ends: 18455 [2023-12-15 23:17:46,903 INFO L226 Difference]: Without dead ends: 18453 [2023-12-15 23:17:46,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:17:46,911 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 2 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:46,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 910 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18453 states. [2023-12-15 23:17:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18453 to 18091. [2023-12-15 23:17:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18091 states, 18090 states have (on average 1.5762299613045883) internal successors, (28514), 18090 states have internal predecessors, (28514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18091 states to 18091 states and 28514 transitions. [2023-12-15 23:17:47,265 INFO L78 Accepts]: Start accepts. Automaton has 18091 states and 28514 transitions. Word has length 78 [2023-12-15 23:17:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:47,265 INFO L495 AbstractCegarLoop]: Abstraction has 18091 states and 28514 transitions. [2023-12-15 23:17:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 18091 states and 28514 transitions. [2023-12-15 23:17:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 23:17:47,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:47,267 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:47,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:17:47,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:47,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1055535180, now seen corresponding path program 1 times [2023-12-15 23:17:47,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:47,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267467826] [2023-12-15 23:17:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:47,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:17:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267467826] [2023-12-15 23:17:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267467826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:47,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:47,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358076038] [2023-12-15 23:17:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:47,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:47,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:47,366 INFO L87 Difference]: Start difference. First operand 18091 states and 28514 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:47,743 INFO L93 Difference]: Finished difference Result 44397 states and 70178 transitions. [2023-12-15 23:17:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:17:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 103 [2023-12-15 23:17:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:47,813 INFO L225 Difference]: With dead ends: 44397 [2023-12-15 23:17:47,813 INFO L226 Difference]: Without dead ends: 35785 [2023-12-15 23:17:47,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:17:47,829 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 408 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:47,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 855 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:47,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35785 states. [2023-12-15 23:17:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35785 to 27861. [2023-12-15 23:17:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27861 states, 27860 states have (on average 1.5737975592246949) internal successors, (43846), 27860 states have internal predecessors, (43846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27861 states to 27861 states and 43846 transitions. [2023-12-15 23:17:48,493 INFO L78 Accepts]: Start accepts. Automaton has 27861 states and 43846 transitions. Word has length 103 [2023-12-15 23:17:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:48,493 INFO L495 AbstractCegarLoop]: Abstraction has 27861 states and 43846 transitions. [2023-12-15 23:17:48,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27861 states and 43846 transitions. [2023-12-15 23:17:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 23:17:48,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:48,495 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:17:48,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:48,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -328806828, now seen corresponding path program 1 times [2023-12-15 23:17:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649436804] [2023-12-15 23:17:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 23:17:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649436804] [2023-12-15 23:17:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649436804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043005685] [2023-12-15 23:17:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:48,588 INFO L87 Difference]: Start difference. First operand 27861 states and 43846 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:49,076 INFO L93 Difference]: Finished difference Result 47873 states and 75670 transitions. [2023-12-15 23:17:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:17:49,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 103 [2023-12-15 23:17:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:49,143 INFO L225 Difference]: With dead ends: 47873 [2023-12-15 23:17:49,143 INFO L226 Difference]: Without dead ends: 39261 [2023-12-15 23:17:49,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:17:49,159 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 416 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:49,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 841 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39261 states. [2023-12-15 23:17:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39261 to 37815. [2023-12-15 23:17:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37815 states, 37814 states have (on average 1.5738615327656424) internal successors, (59514), 37814 states have internal predecessors, (59514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37815 states to 37815 states and 59514 transitions. [2023-12-15 23:17:49,913 INFO L78 Accepts]: Start accepts. Automaton has 37815 states and 59514 transitions. Word has length 103 [2023-12-15 23:17:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:49,913 INFO L495 AbstractCegarLoop]: Abstraction has 37815 states and 59514 transitions. [2023-12-15 23:17:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 37815 states and 59514 transitions. [2023-12-15 23:17:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 23:17:49,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:49,915 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:49,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:17:49,915 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:49,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -753514220, now seen corresponding path program 1 times [2023-12-15 23:17:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:49,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018603958] [2023-12-15 23:17:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:17:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018603958] [2023-12-15 23:17:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018603958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:49,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:49,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:17:49,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859742677] [2023-12-15 23:17:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:49,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:17:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:17:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:17:49,999 INFO L87 Difference]: Start difference. First operand 37815 states and 59514 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:50,503 INFO L93 Difference]: Finished difference Result 53799 states and 85194 transitions. [2023-12-15 23:17:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:17:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2023-12-15 23:17:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:50,576 INFO L225 Difference]: With dead ends: 53799 [2023-12-15 23:17:50,576 INFO L226 Difference]: Without dead ends: 44957 [2023-12-15 23:17:50,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:17:50,592 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 408 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:50,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 864 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44957 states. [2023-12-15 23:17:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44957 to 43511. [2023-12-15 23:17:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43511 states, 43510 states have (on average 1.5766030797517812) internal successors, (68598), 43510 states have internal predecessors, (68598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43511 states to 43511 states and 68598 transitions. [2023-12-15 23:17:51,460 INFO L78 Accepts]: Start accepts. Automaton has 43511 states and 68598 transitions. Word has length 103 [2023-12-15 23:17:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:51,460 INFO L495 AbstractCegarLoop]: Abstraction has 43511 states and 68598 transitions. [2023-12-15 23:17:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 43511 states and 68598 transitions. [2023-12-15 23:17:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 23:17:51,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:51,462 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:17:51,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1946825370, now seen corresponding path program 1 times [2023-12-15 23:17:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205508848] [2023-12-15 23:17:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:17:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205508848] [2023-12-15 23:17:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205508848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:17:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798092526] [2023-12-15 23:17:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:17:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:17:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:51,551 INFO L87 Difference]: Start difference. First operand 43511 states and 68598 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:52,254 INFO L93 Difference]: Finished difference Result 71154 states and 112827 transitions. [2023-12-15 23:17:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:17:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 104 [2023-12-15 23:17:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:52,356 INFO L225 Difference]: With dead ends: 71154 [2023-12-15 23:17:52,356 INFO L226 Difference]: Without dead ends: 56616 [2023-12-15 23:17:52,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:17:52,383 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 174 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:52,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 562 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56616 states. [2023-12-15 23:17:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56616 to 55172. [2023-12-15 23:17:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55172 states, 55171 states have (on average 1.5766979028837613) internal successors, (86988), 55171 states have internal predecessors, (86988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55172 states to 55172 states and 86988 transitions. [2023-12-15 23:17:53,515 INFO L78 Accepts]: Start accepts. Automaton has 55172 states and 86988 transitions. Word has length 104 [2023-12-15 23:17:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:53,515 INFO L495 AbstractCegarLoop]: Abstraction has 55172 states and 86988 transitions. [2023-12-15 23:17:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 55172 states and 86988 transitions. [2023-12-15 23:17:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 23:17:53,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:53,517 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:53,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:17:53,517 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:53,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1530493476, now seen corresponding path program 1 times [2023-12-15 23:17:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:53,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021020880] [2023-12-15 23:17:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:53,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:17:53,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:53,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021020880] [2023-12-15 23:17:53,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021020880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:53,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361710196] [2023-12-15 23:17:53,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:53,564 INFO L87 Difference]: Start difference. First operand 55172 states and 86988 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:54,566 INFO L93 Difference]: Finished difference Result 119538 states and 189154 transitions. [2023-12-15 23:17:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 104 [2023-12-15 23:17:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:54,723 INFO L225 Difference]: With dead ends: 119538 [2023-12-15 23:17:54,723 INFO L226 Difference]: Without dead ends: 93444 [2023-12-15 23:17:54,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:54,768 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 74 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:54,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 342 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:54,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93444 states. [2023-12-15 23:17:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93444 to 93166. [2023-12-15 23:17:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93166 states, 93165 states have (on average 1.576182042612569) internal successors, (146845), 93165 states have internal predecessors, (146845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93166 states to 93166 states and 146845 transitions. [2023-12-15 23:17:56,625 INFO L78 Accepts]: Start accepts. Automaton has 93166 states and 146845 transitions. Word has length 104 [2023-12-15 23:17:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:56,625 INFO L495 AbstractCegarLoop]: Abstraction has 93166 states and 146845 transitions. [2023-12-15 23:17:56,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 93166 states and 146845 transitions. [2023-12-15 23:17:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 23:17:56,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:56,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:56,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:17:56,627 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:56,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1627232106, now seen corresponding path program 1 times [2023-12-15 23:17:56,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58560588] [2023-12-15 23:17:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:56,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:56,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58560588] [2023-12-15 23:17:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58560588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:56,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:56,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:56,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374076031] [2023-12-15 23:17:56,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:56,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:56,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:56,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:56,697 INFO L87 Difference]: Start difference. First operand 93166 states and 146845 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:17:57,812 INFO L93 Difference]: Finished difference Result 181012 states and 285671 transitions. [2023-12-15 23:17:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:17:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-15 23:17:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:17:57,963 INFO L225 Difference]: With dead ends: 181012 [2023-12-15 23:17:57,963 INFO L226 Difference]: Without dead ends: 87922 [2023-12-15 23:17:58,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:58,025 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 74 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:58,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 402 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:17:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87922 states. [2023-12-15 23:17:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87922 to 87915. [2023-12-15 23:17:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87915 states, 87914 states have (on average 1.5689082512455355) internal successors, (137929), 87914 states have internal predecessors, (137929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87915 states to 87915 states and 137929 transitions. [2023-12-15 23:17:59,868 INFO L78 Accepts]: Start accepts. Automaton has 87915 states and 137929 transitions. Word has length 105 [2023-12-15 23:17:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:17:59,869 INFO L495 AbstractCegarLoop]: Abstraction has 87915 states and 137929 transitions. [2023-12-15 23:17:59,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:17:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 87915 states and 137929 transitions. [2023-12-15 23:17:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 23:17:59,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:17:59,873 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:17:59,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:17:59,873 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:17:59,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:17:59,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1572123986, now seen corresponding path program 1 times [2023-12-15 23:17:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:17:59,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604769468] [2023-12-15 23:17:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:17:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:59,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604769468] [2023-12-15 23:17:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604769468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:17:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:17:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:17:59,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096832011] [2023-12-15 23:17:59,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:17:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:17:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:17:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:17:59,913 INFO L87 Difference]: Start difference. First operand 87915 states and 137929 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:01,991 INFO L93 Difference]: Finished difference Result 261522 states and 409395 transitions. [2023-12-15 23:18:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-15 23:18:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:02,329 INFO L225 Difference]: With dead ends: 261522 [2023-12-15 23:18:02,330 INFO L226 Difference]: Without dead ends: 173685 [2023-12-15 23:18:02,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:02,387 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 143 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:02,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 448 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173685 states. [2023-12-15 23:18:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173685 to 173683. [2023-12-15 23:18:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173683 states, 173682 states have (on average 1.5513236835135478) internal successors, (269437), 173682 states have internal predecessors, (269437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173683 states to 173683 states and 269437 transitions. [2023-12-15 23:18:05,799 INFO L78 Accepts]: Start accepts. Automaton has 173683 states and 269437 transitions. Word has length 105 [2023-12-15 23:18:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:05,800 INFO L495 AbstractCegarLoop]: Abstraction has 173683 states and 269437 transitions. [2023-12-15 23:18:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 173683 states and 269437 transitions. [2023-12-15 23:18:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 23:18:05,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:05,804 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:18:05,804 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:05,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash 125373270, now seen corresponding path program 1 times [2023-12-15 23:18:05,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669749094] [2023-12-15 23:18:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:18:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669749094] [2023-12-15 23:18:05,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669749094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:05,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:05,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:18:05,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157164459] [2023-12-15 23:18:05,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:05,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:18:05,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:18:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:05,884 INFO L87 Difference]: Start difference. First operand 173683 states and 269437 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:07,509 INFO L93 Difference]: Finished difference Result 247991 states and 385051 transitions. [2023-12-15 23:18:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-15 23:18:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:07,629 INFO L225 Difference]: With dead ends: 247991 [2023-12-15 23:18:07,629 INFO L226 Difference]: Without dead ends: 74481 [2023-12-15 23:18:07,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:07,739 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 58 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:07,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 371 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74481 states. [2023-12-15 23:18:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74481 to 74231. [2023-12-15 23:18:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74231 states, 74230 states have (on average 1.5439714401185505) internal successors, (114609), 74230 states have internal predecessors, (114609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74231 states to 74231 states and 114609 transitions. [2023-12-15 23:18:09,252 INFO L78 Accepts]: Start accepts. Automaton has 74231 states and 114609 transitions. Word has length 105 [2023-12-15 23:18:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:09,252 INFO L495 AbstractCegarLoop]: Abstraction has 74231 states and 114609 transitions. [2023-12-15 23:18:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 74231 states and 114609 transitions. [2023-12-15 23:18:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 23:18:09,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:09,263 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:18:09,263 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:09,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 852101622, now seen corresponding path program 1 times [2023-12-15 23:18:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351873277] [2023-12-15 23:18:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:18:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351873277] [2023-12-15 23:18:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351873277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:18:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422999061] [2023-12-15 23:18:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:18:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:18:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:09,339 INFO L87 Difference]: Start difference. First operand 74231 states and 114609 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:09,982 INFO L93 Difference]: Finished difference Result 105611 states and 163167 transitions. [2023-12-15 23:18:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:09,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-15 23:18:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:10,031 INFO L225 Difference]: With dead ends: 105611 [2023-12-15 23:18:10,031 INFO L226 Difference]: Without dead ends: 31553 [2023-12-15 23:18:10,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:10,068 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 45 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:10,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 346 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31553 states. [2023-12-15 23:18:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31553 to 31495. [2023-12-15 23:18:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31495 states, 31494 states have (on average 1.5350542960563918) internal successors, (48345), 31494 states have internal predecessors, (48345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31495 states to 31495 states and 48345 transitions. [2023-12-15 23:18:10,679 INFO L78 Accepts]: Start accepts. Automaton has 31495 states and 48345 transitions. Word has length 105 [2023-12-15 23:18:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:10,680 INFO L495 AbstractCegarLoop]: Abstraction has 31495 states and 48345 transitions. [2023-12-15 23:18:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 31495 states and 48345 transitions. [2023-12-15 23:18:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 23:18:10,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:10,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:18:10,681 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:10,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 110503649, now seen corresponding path program 1 times [2023-12-15 23:18:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105385257] [2023-12-15 23:18:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:18:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105385257] [2023-12-15 23:18:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105385257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:10,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:18:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98603080] [2023-12-15 23:18:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:18:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:18:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:18:10,989 INFO L87 Difference]: Start difference. First operand 31495 states and 48345 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:11,723 INFO L93 Difference]: Finished difference Result 77673 states and 118990 transitions. [2023-12-15 23:18:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:18:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-15 23:18:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:11,820 INFO L225 Difference]: With dead ends: 77673 [2023-12-15 23:18:11,821 INFO L226 Difference]: Without dead ends: 57899 [2023-12-15 23:18:11,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:18:11,844 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 281 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:11,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 537 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57899 states. [2023-12-15 23:18:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57899 to 49447. [2023-12-15 23:18:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49447 states, 49446 states have (on average 1.5331270476883874) internal successors, (75807), 49446 states have internal predecessors, (75807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49447 states to 49447 states and 75807 transitions. [2023-12-15 23:18:12,902 INFO L78 Accepts]: Start accepts. Automaton has 49447 states and 75807 transitions. Word has length 106 [2023-12-15 23:18:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:12,902 INFO L495 AbstractCegarLoop]: Abstraction has 49447 states and 75807 transitions. [2023-12-15 23:18:12,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49447 states and 75807 transitions. [2023-12-15 23:18:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 23:18:12,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:12,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:18:12,903 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:12,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash -722071908, now seen corresponding path program 1 times [2023-12-15 23:18:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455992097] [2023-12-15 23:18:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:18:13,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455992097] [2023-12-15 23:18:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455992097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:13,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:18:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360300853] [2023-12-15 23:18:13,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:13,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:18:13,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:18:13,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:18:13,046 INFO L87 Difference]: Start difference. First operand 49447 states and 75807 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:14,229 INFO L93 Difference]: Finished difference Result 117026 states and 179653 transitions. [2023-12-15 23:18:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:18:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-15 23:18:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:14,354 INFO L225 Difference]: With dead ends: 117026 [2023-12-15 23:18:14,354 INFO L226 Difference]: Without dead ends: 80990 [2023-12-15 23:18:14,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:18:14,386 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 270 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:14,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 511 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80990 states. [2023-12-15 23:18:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80990 to 74143. [2023-12-15 23:18:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74143 states, 74142 states have (on average 1.530751800598851) internal successors, (113493), 74142 states have internal predecessors, (113493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74143 states to 74143 states and 113493 transitions. [2023-12-15 23:18:15,827 INFO L78 Accepts]: Start accepts. Automaton has 74143 states and 113493 transitions. Word has length 106 [2023-12-15 23:18:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:15,827 INFO L495 AbstractCegarLoop]: Abstraction has 74143 states and 113493 transitions. [2023-12-15 23:18:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 74143 states and 113493 transitions. [2023-12-15 23:18:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-15 23:18:15,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:15,828 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 23:18:15,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:15,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:15,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1228996218, now seen corresponding path program 1 times [2023-12-15 23:18:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072002199] [2023-12-15 23:18:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:18:15,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072002199] [2023-12-15 23:18:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072002199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:18:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183956818] [2023-12-15 23:18:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:15,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:18:15,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:18:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:18:15,896 INFO L87 Difference]: Start difference. First operand 74143 states and 113493 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:17,295 INFO L93 Difference]: Finished difference Result 115591 states and 177704 transitions. [2023-12-15 23:18:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:18:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-15 23:18:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:17,410 INFO L225 Difference]: With dead ends: 115591 [2023-12-15 23:18:17,411 INFO L226 Difference]: Without dead ends: 94145 [2023-12-15 23:18:17,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:18:17,431 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 181 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:17,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 566 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:18:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94145 states. [2023-12-15 23:18:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94145 to 85073. [2023-12-15 23:18:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85073 states, 85072 states have (on average 1.5303860259544857) internal successors, (130193), 85072 states have internal predecessors, (130193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85073 states to 85073 states and 130193 transitions. [2023-12-15 23:18:19,241 INFO L78 Accepts]: Start accepts. Automaton has 85073 states and 130193 transitions. Word has length 108 [2023-12-15 23:18:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:19,242 INFO L495 AbstractCegarLoop]: Abstraction has 85073 states and 130193 transitions. [2023-12-15 23:18:19,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 85073 states and 130193 transitions. [2023-12-15 23:18:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-15 23:18:19,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:19,242 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:19,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 23:18:19,243 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:19,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1622023228, now seen corresponding path program 1 times [2023-12-15 23:18:19,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25683667] [2023-12-15 23:18:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:19,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:18:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:19,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25683667] [2023-12-15 23:18:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25683667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:18:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538875900] [2023-12-15 23:18:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:18:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:18:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:19,284 INFO L87 Difference]: Start difference. First operand 85073 states and 130193 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:21,131 INFO L93 Difference]: Finished difference Result 191355 states and 293239 transitions. [2023-12-15 23:18:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:21,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-15 23:18:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:21,381 INFO L225 Difference]: With dead ends: 191355 [2023-12-15 23:18:21,381 INFO L226 Difference]: Without dead ends: 147401 [2023-12-15 23:18:21,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:21,420 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 62 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:21,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 358 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147401 states. [2023-12-15 23:18:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147401 to 147059. [2023-12-15 23:18:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147059 states, 147058 states have (on average 1.5272817527778155) internal successors, (224599), 147058 states have internal predecessors, (224599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147059 states to 147059 states and 224599 transitions. [2023-12-15 23:18:24,468 INFO L78 Accepts]: Start accepts. Automaton has 147059 states and 224599 transitions. Word has length 108 [2023-12-15 23:18:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:24,469 INFO L495 AbstractCegarLoop]: Abstraction has 147059 states and 224599 transitions. [2023-12-15 23:18:24,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:24,469 INFO L276 IsEmpty]: Start isEmpty. Operand 147059 states and 224599 transitions. [2023-12-15 23:18:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-15 23:18:24,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:24,470 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:24,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 23:18:24,470 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:24,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:24,470 INFO L85 PathProgramCache]: Analyzing trace with hash 575826580, now seen corresponding path program 1 times [2023-12-15 23:18:24,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496130551] [2023-12-15 23:18:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:24,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:18:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496130551] [2023-12-15 23:18:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496130551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:18:24,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684533950] [2023-12-15 23:18:24,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:18:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:18:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:24,505 INFO L87 Difference]: Start difference. First operand 147059 states and 224599 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:18:28,500 INFO L93 Difference]: Finished difference Result 437901 states and 667333 transitions. [2023-12-15 23:18:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 109 [2023-12-15 23:18:28,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:18:29,025 INFO L225 Difference]: With dead ends: 437901 [2023-12-15 23:18:29,025 INFO L226 Difference]: Without dead ends: 290958 [2023-12-15 23:18:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:29,103 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:29,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 421 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290958 states. [2023-12-15 23:18:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290958 to 290956. [2023-12-15 23:18:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290956 states, 290955 states have (on average 1.5113746111941708) internal successors, (439742), 290955 states have internal predecessors, (439742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290956 states to 290956 states and 439742 transitions. [2023-12-15 23:18:35,720 INFO L78 Accepts]: Start accepts. Automaton has 290956 states and 439742 transitions. Word has length 109 [2023-12-15 23:18:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:18:35,720 INFO L495 AbstractCegarLoop]: Abstraction has 290956 states and 439742 transitions. [2023-12-15 23:18:35,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:18:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 290956 states and 439742 transitions. [2023-12-15 23:18:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-15 23:18:35,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:18:35,721 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:18:35,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 23:18:35,722 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:18:35,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:18:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 963293870, now seen corresponding path program 1 times [2023-12-15 23:18:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:18:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860041311] [2023-12-15 23:18:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:18:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:18:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:18:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:18:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:18:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860041311] [2023-12-15 23:18:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860041311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:18:35,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:18:35,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:18:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089589838] [2023-12-15 23:18:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:18:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:18:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:18:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:18:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:35,755 INFO L87 Difference]: Start difference. First operand 290956 states and 439742 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:18:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:18:36,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:18:36,556 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 132 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:18:36,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 447 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:18:36,557 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:18:36,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 23:18:36,558 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (290956states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (54229 states constructed, input type IntersectNwa). [2023-12-15 23:18:36,561 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] [2023-12-15 23:18:36,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:18:36,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:18:36 BoogieIcfgContainer [2023-12-15 23:18:36,565 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:18:36,565 INFO L158 Benchmark]: Toolchain (without parser) took 55540.50ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 162.4MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 23:18:36,565 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:18:36,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.32ms. Allocated memory is still 197.1MB. Free memory was 162.4MB in the beginning and 145.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 23:18:36,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.01ms. Allocated memory is still 197.1MB. Free memory was 145.0MB in the beginning and 141.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:18:36,566 INFO L158 Benchmark]: Boogie Preprocessor took 57.00ms. Allocated memory is still 197.1MB. Free memory was 141.5MB in the beginning and 138.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:18:36,567 INFO L158 Benchmark]: RCFGBuilder took 603.88ms. Allocated memory is still 197.1MB. Free memory was 138.0MB in the beginning and 168.4MB in the end (delta: -30.4MB). Peak memory consumption was 43.5MB. Max. memory is 8.0GB. [2023-12-15 23:18:36,568 INFO L158 Benchmark]: TraceAbstraction took 54499.76ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 167.9MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 23:18:36,577 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 197.1MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 307.32ms. Allocated memory is still 197.1MB. Free memory was 162.4MB in the beginning and 145.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.01ms. Allocated memory is still 197.1MB. Free memory was 145.0MB in the beginning and 141.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.00ms. Allocated memory is still 197.1MB. Free memory was 141.5MB in the beginning and 138.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 603.88ms. Allocated memory is still 197.1MB. Free memory was 138.0MB in the beginning and 168.4MB in the end (delta: -30.4MB). Peak memory consumption was 43.5MB. Max. memory is 8.0GB. * TraceAbstraction took 54499.76ms. Allocated memory was 197.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 167.9MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 2.0GB. 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: 600]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 600). Cancelled while NwaCegarLoop was constructing difference of abstraction (290956states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (54229 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.5s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5265 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5265 mSDsluCounter, 15976 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9302 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1031 IncrementalHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 6674 mSDtfsCounter, 1031 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290956occurred in iteration=29, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 28.3s AutomataMinimizationTime, 29 MinimizatonAttempts, 44060 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 2570 NumberOfCodeBlocks, 2570 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2540 ConstructedInterpolants, 0 QuantifiedInterpolants, 7804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 225/225 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