/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/eca-rers2012/Problem13_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:56:07,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:56:07,184 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 18:56:07,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:56:07,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:56:07,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:56:07,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:56:07,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:56:07,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:56:07,213 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:56:07,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:56:07,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:56:07,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:56:07,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:56:07,215 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:56:07,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:56:07,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:56:07,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:56:07,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:56:07,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:56:07,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:56:07,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:56:07,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:56:07,220 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:56:07,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:56:07,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:56:07,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:56:07,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:56:07,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:56:07,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:56:07,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:56:07,430 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:56:07,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2023-12-15 18:56:08,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:56:08,928 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:56:08,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2023-12-15 18:56:08,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c768f2d/06c070ffe3544a608dd0daed80b0270f/FLAGfc6418d29 [2023-12-15 18:56:08,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c768f2d/06c070ffe3544a608dd0daed80b0270f [2023-12-15 18:56:08,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:56:08,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:56:08,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:56:08,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:56:08,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:56:08,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:56:08" (1/1) ... [2023-12-15 18:56:08,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3079b495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:08, skipping insertion in model container [2023-12-15 18:56:08,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:56:08" (1/1) ... [2023-12-15 18:56:09,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:56:09,351 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43.c[2870,2883] [2023-12-15 18:56:10,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:56:10,023 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:56:10,039 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43.c[2870,2883] [2023-12-15 18:56:10,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:56:10,419 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:56:10,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10 WrapperNode [2023-12-15 18:56:10,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:56:10,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:56:10,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:56:10,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:56:10,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:10,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:10,862 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:56:10,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:56:10,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:56:10,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:56:10,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:56:10,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:10,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:10,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,078 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 18:56:11,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:56:11,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:56:11,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:56:11,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:56:11,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (1/1) ... [2023-12-15 18:56:11,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:56:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:56:11,383 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 18:56:11,424 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 18:56:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:56:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:56:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:56:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:56:11,480 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:56:11,481 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:56:15,221 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:56:15,259 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:56:15,259 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:56:15,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:56:15 BoogieIcfgContainer [2023-12-15 18:56:15,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:56:15,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:56:15,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:56:15,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:56:15,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:56:08" (1/3) ... [2023-12-15 18:56:15,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76789ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:56:15, skipping insertion in model container [2023-12-15 18:56:15,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:56:10" (2/3) ... [2023-12-15 18:56:15,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76789ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:56:15, skipping insertion in model container [2023-12-15 18:56:15,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:56:15" (3/3) ... [2023-12-15 18:56:15,265 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43.c [2023-12-15 18:56:15,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:56:15,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:56:15,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:56:15,322 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;@41dc6434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:56:15,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:56:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 18:56:15,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:15,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:15,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:15,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1298221327, now seen corresponding path program 1 times [2023-12-15 18:56:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725221761] [2023-12-15 18:56:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:15,429 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 18:56:15,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725221761] [2023-12-15 18:56:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725221761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:15,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:15,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:15,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614196038] [2023-12-15 18:56:15,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:15,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:56:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:56:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:56:15,455 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 18:56:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:15,582 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:56:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:56:15,593 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-15 18:56:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:15,617 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:56:15,617 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:56:15,622 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 18:56:15,624 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:15,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:56:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:56:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:56:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:56:15,694 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 17 [2023-12-15 18:56:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:15,695 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:56:15,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 18:56:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:56:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 18:56:15,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:15,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:15,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:56:15,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:15,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1798423555, now seen corresponding path program 1 times [2023-12-15 18:56:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348783186] [2023-12-15 18:56:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:15,765 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 18:56:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:15,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348783186] [2023-12-15 18:56:15,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348783186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:15,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:15,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296489878] [2023-12-15 18:56:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:15,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:15,768 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 18:56:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:19,033 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2023-12-15 18:56:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:19,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-15 18:56:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:19,040 INFO L225 Difference]: With dead ends: 2905 [2023-12-15 18:56:19,040 INFO L226 Difference]: Without dead ends: 1872 [2023-12-15 18:56:19,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:19,043 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 871 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:19,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:56:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-15 18:56:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2023-12-15 18:56:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states 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 18:56:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2023-12-15 18:56:19,095 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 17 [2023-12-15 18:56:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:19,096 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2023-12-15 18:56:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 18:56:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2023-12-15 18:56:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 18:56:19,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:19,102 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:56:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:56:19,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:19,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 950693678, now seen corresponding path program 1 times [2023-12-15 18:56:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:19,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180501647] [2023-12-15 18:56:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:19,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180501647] [2023-12-15 18:56:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180501647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:19,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206585907] [2023-12-15 18:56:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:19,436 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 18:56:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:22,690 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2023-12-15 18:56:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-15 18:56:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:22,701 INFO L225 Difference]: With dead ends: 5316 [2023-12-15 18:56:22,702 INFO L226 Difference]: Without dead ends: 3459 [2023-12-15 18:56:22,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:22,704 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:22,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:56:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-15 18:56:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2023-12-15 18:56:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states 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 18:56:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2023-12-15 18:56:22,754 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 89 [2023-12-15 18:56:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:22,755 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2023-12-15 18:56:22,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 18:56:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2023-12-15 18:56:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 18:56:22,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:22,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:22,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:56:22,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:22,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1456405851, now seen corresponding path program 1 times [2023-12-15 18:56:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621877253] [2023-12-15 18:56:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:23,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621877253] [2023-12-15 18:56:23,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621877253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:23,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:23,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635126152] [2023-12-15 18:56:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:56:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:56:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:56:23,005 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 25.75) 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 18:56:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:27,134 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2023-12-15 18:56:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:56:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) 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 103 [2023-12-15 18:56:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:27,150 INFO L225 Difference]: With dead ends: 10869 [2023-12-15 18:56:27,151 INFO L226 Difference]: Without dead ends: 7412 [2023-12-15 18:56:27,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 18:56:27,163 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:27,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-15 18:56:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2023-12-15 18:56:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2023-12-15 18:56:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states 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 18:56:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2023-12-15 18:56:27,257 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 103 [2023-12-15 18:56:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:27,258 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2023-12-15 18:56:27,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) 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 18:56:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2023-12-15 18:56:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 18:56:27,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:27,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 18:56:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:56:27,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:27,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1703643241, now seen corresponding path program 1 times [2023-12-15 18:56:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:27,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176951095] [2023-12-15 18:56:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:56:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176951095] [2023-12-15 18:56:27,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176951095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:27,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:27,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471944931] [2023-12-15 18:56:27,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:27,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:27,457 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 18:56:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:30,759 INFO L93 Difference]: Finished difference Result 20356 states and 26251 transitions. [2023-12-15 18:56:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 184 [2023-12-15 18:56:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:30,790 INFO L225 Difference]: With dead ends: 20356 [2023-12-15 18:56:30,790 INFO L226 Difference]: Without dead ends: 13733 [2023-12-15 18:56:30,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:30,798 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:30,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 978 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:56:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2023-12-15 18:56:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 12936. [2023-12-15 18:56:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states 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 18:56:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2023-12-15 18:56:30,990 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 184 [2023-12-15 18:56:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:30,991 INFO L495 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2023-12-15 18:56:30,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 18:56:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2023-12-15 18:56:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-15 18:56:30,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:30,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:30,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:56:30,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:30,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:30,994 INFO L85 PathProgramCache]: Analyzing trace with hash 177826073, now seen corresponding path program 1 times [2023-12-15 18:56:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:30,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957941401] [2023-12-15 18:56:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:30,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:56:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957941401] [2023-12-15 18:56:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957941401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273677553] [2023-12-15 18:56:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:31,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:31,137 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 18:56:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:33,884 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2023-12-15 18:56:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2023-12-15 18:56:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:33,922 INFO L225 Difference]: With dead ends: 31391 [2023-12-15 18:56:33,922 INFO L226 Difference]: Without dead ends: 19243 [2023-12-15 18:56:33,934 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 18:56:33,935 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 859 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:33,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 922 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:56:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2023-12-15 18:56:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 19234. [2023-12-15 18:56:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 19233 states have (on average 1.1956533042167108) internal successors, (22996), 19233 states have internal predecessors, (22996), 0 states have call successors, (0), 0 states 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 18:56:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 22996 transitions. [2023-12-15 18:56:34,221 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 22996 transitions. Word has length 216 [2023-12-15 18:56:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:34,221 INFO L495 AbstractCegarLoop]: Abstraction has 19234 states and 22996 transitions. [2023-12-15 18:56:34,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 18:56:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 22996 transitions. [2023-12-15 18:56:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-15 18:56:34,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:34,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:56:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:56:34,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:34,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 779039586, now seen corresponding path program 1 times [2023-12-15 18:56:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506577616] [2023-12-15 18:56:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 18:56:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506577616] [2023-12-15 18:56:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506577616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:34,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17589663] [2023-12-15 18:56:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:56:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:56:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:56:34,557 INFO L87 Difference]: Start difference. First operand 19234 states and 22996 transitions. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 18:56:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:40,213 INFO L93 Difference]: Finished difference Result 71736 states and 86316 transitions. [2023-12-15 18:56:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:56:40,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 300 [2023-12-15 18:56:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:40,293 INFO L225 Difference]: With dead ends: 71736 [2023-12-15 18:56:40,294 INFO L226 Difference]: Without dead ends: 53290 [2023-12-15 18:56:40,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:56:40,319 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1736 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 1188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:40,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 686 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-15 18:56:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53290 states. [2023-12-15 18:56:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53290 to 50022. [2023-12-15 18:56:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50022 states, 50021 states have (on average 1.1766658003638473) internal successors, (58858), 50021 states have internal predecessors, (58858), 0 states have call successors, (0), 0 states 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 18:56:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50022 states to 50022 states and 58858 transitions. [2023-12-15 18:56:40,942 INFO L78 Accepts]: Start accepts. Automaton has 50022 states and 58858 transitions. Word has length 300 [2023-12-15 18:56:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:40,942 INFO L495 AbstractCegarLoop]: Abstraction has 50022 states and 58858 transitions. [2023-12-15 18:56:40,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 18:56:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 50022 states and 58858 transitions. [2023-12-15 18:56:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-15 18:56:40,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:40,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:40,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:56:40,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:40,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -978908552, now seen corresponding path program 1 times [2023-12-15 18:56:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:40,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896043060] [2023-12-15 18:56:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-15 18:56:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896043060] [2023-12-15 18:56:41,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896043060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:56:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170460913] [2023-12-15 18:56:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:41,204 INFO L87 Difference]: Start difference. First operand 50022 states and 58858 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 18:56:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:44,358 INFO L93 Difference]: Finished difference Result 110297 states and 129456 transitions. [2023-12-15 18:56:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 343 [2023-12-15 18:56:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:44,461 INFO L225 Difference]: With dead ends: 110297 [2023-12-15 18:56:44,461 INFO L226 Difference]: Without dead ends: 61063 [2023-12-15 18:56:44,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:44,811 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:44,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1200 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:56:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61063 states. [2023-12-15 18:56:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61063 to 61053. [2023-12-15 18:56:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61053 states, 61052 states have (on average 1.1573904212802202) internal successors, (70661), 61052 states have internal predecessors, (70661), 0 states have call successors, (0), 0 states 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 18:56:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61053 states to 61053 states and 70661 transitions. [2023-12-15 18:56:45,685 INFO L78 Accepts]: Start accepts. Automaton has 61053 states and 70661 transitions. Word has length 343 [2023-12-15 18:56:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:45,686 INFO L495 AbstractCegarLoop]: Abstraction has 61053 states and 70661 transitions. [2023-12-15 18:56:45,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 18:56:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 61053 states and 70661 transitions. [2023-12-15 18:56:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-15 18:56:45,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:45,691 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:56:45,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:45,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -839463295, now seen corresponding path program 1 times [2023-12-15 18:56:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731193119] [2023-12-15 18:56:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-15 18:56:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731193119] [2023-12-15 18:56:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731193119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:46,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222332230] [2023-12-15 18:56:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:46,013 INFO L87 Difference]: Start difference. First operand 61053 states and 70661 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 18:56:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:50,054 INFO L93 Difference]: Finished difference Result 147481 states and 173540 transitions. [2023-12-15 18:56:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 346 [2023-12-15 18:56:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:50,164 INFO L225 Difference]: With dead ends: 147481 [2023-12-15 18:56:50,164 INFO L226 Difference]: Without dead ends: 98247 [2023-12-15 18:56:50,194 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 18:56:50,197 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1015 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:50,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 728 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-15 18:56:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98247 states. [2023-12-15 18:56:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98247 to 76069. [2023-12-15 18:56:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76069 states, 76068 states have (on average 1.1683756638796865) internal successors, (88876), 76068 states have internal predecessors, (88876), 0 states have call successors, (0), 0 states 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 18:56:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76069 states to 76069 states and 88876 transitions. [2023-12-15 18:56:51,243 INFO L78 Accepts]: Start accepts. Automaton has 76069 states and 88876 transitions. Word has length 346 [2023-12-15 18:56:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:51,244 INFO L495 AbstractCegarLoop]: Abstraction has 76069 states and 88876 transitions. [2023-12-15 18:56:51,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 18:56:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 76069 states and 88876 transitions. [2023-12-15 18:56:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-15 18:56:51,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:51,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:51,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:56:51,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:51,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash 551289520, now seen corresponding path program 1 times [2023-12-15 18:56:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:51,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85171572] [2023-12-15 18:56:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 254 proven. 113 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 18:56:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85171572] [2023-12-15 18:56:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85171572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:56:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218563208] [2023-12-15 18:56:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:52,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:56:52,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:56:52,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:56:52,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:56:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:52,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:56:52,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:56:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-15 18:56:52,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:56:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218563208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:52,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:56:52,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:56:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792162079] [2023-12-15 18:56:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:52,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:52,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:56:52,613 INFO L87 Difference]: Start difference. First operand 76069 states and 88876 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 18:56:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:55,685 INFO L93 Difference]: Finished difference Result 156051 states and 182967 transitions. [2023-12-15 18:56:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:55,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 372 [2023-12-15 18:56:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:55,788 INFO L225 Difference]: With dead ends: 156051 [2023-12-15 18:56:55,788 INFO L226 Difference]: Without dead ends: 91801 [2023-12-15 18:56:55,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:56:55,825 INFO L413 NwaCegarLoop]: 1739 mSDtfsCounter, 900 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1868 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:56:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91801 states. [2023-12-15 18:56:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91801 to 83137. [2023-12-15 18:56:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83137 states, 83136 states have (on average 1.15917292147806) internal successors, (96369), 83136 states have internal predecessors, (96369), 0 states have call successors, (0), 0 states 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 18:56:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83137 states to 83137 states and 96369 transitions. [2023-12-15 18:56:56,708 INFO L78 Accepts]: Start accepts. Automaton has 83137 states and 96369 transitions. Word has length 372 [2023-12-15 18:56:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:56,709 INFO L495 AbstractCegarLoop]: Abstraction has 83137 states and 96369 transitions. [2023-12-15 18:56:56,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 18:56:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 83137 states and 96369 transitions. [2023-12-15 18:56:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-15 18:56:56,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:56,717 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:56,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:56:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:56:56,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:56,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1478155197, now seen corresponding path program 1 times [2023-12-15 18:56:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:56,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859518523] [2023-12-15 18:56:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 18:56:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859518523] [2023-12-15 18:56:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859518523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:57,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765048738] [2023-12-15 18:56:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:57,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:57,311 INFO L87 Difference]: Start difference. First operand 83137 states and 96369 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 18:57:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:00,356 INFO L93 Difference]: Finished difference Result 167856 states and 194339 transitions. [2023-12-15 18:57:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 416 [2023-12-15 18:57:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:00,448 INFO L225 Difference]: With dead ends: 167856 [2023-12-15 18:57:00,448 INFO L226 Difference]: Without dead ends: 85507 [2023-12-15 18:57:00,475 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 18:57:00,477 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 900 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:00,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1467 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:57:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85507 states. [2023-12-15 18:57:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85507 to 83129. [2023-12-15 18:57:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83129 states, 83128 states have (on average 1.1257458377442018) internal successors, (93581), 83128 states have internal predecessors, (93581), 0 states have call successors, (0), 0 states 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 18:57:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83129 states to 83129 states and 93581 transitions. [2023-12-15 18:57:01,411 INFO L78 Accepts]: Start accepts. Automaton has 83129 states and 93581 transitions. Word has length 416 [2023-12-15 18:57:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:01,412 INFO L495 AbstractCegarLoop]: Abstraction has 83129 states and 93581 transitions. [2023-12-15 18:57:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 18:57:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 83129 states and 93581 transitions. [2023-12-15 18:57:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-15 18:57:01,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:01,418 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:57:01,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:57:01,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:01,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1857552797, now seen corresponding path program 1 times [2023-12-15 18:57:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782037262] [2023-12-15 18:57:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 397 proven. 113 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-15 18:57:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782037262] [2023-12-15 18:57:02,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782037262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:57:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497872643] [2023-12-15 18:57:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:02,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:57:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:57:02,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:57:02,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:57:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:02,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:57:02,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:57:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-15 18:57:02,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:57:02,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497872643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:02,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:57:02,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:57:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949723957] [2023-12-15 18:57:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:02,958 INFO L87 Difference]: Start difference. First operand 83129 states and 93581 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 18:57:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:57:05,794 INFO L93 Difference]: Finished difference Result 165469 states and 186369 transitions. [2023-12-15 18:57:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:05,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 442 [2023-12-15 18:57:05,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:57:05,880 INFO L225 Difference]: With dead ends: 165469 [2023-12-15 18:57:05,880 INFO L226 Difference]: Without dead ends: 83128 [2023-12-15 18:57:05,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:57:05,914 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 1103 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:05,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1432 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:57:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83128 states. [2023-12-15 18:57:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83128 to 82339. [2023-12-15 18:57:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82339 states, 82338 states have (on average 1.0993708858607205) internal successors, (90520), 82338 states have internal predecessors, (90520), 0 states have call successors, (0), 0 states 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 18:57:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82339 states to 82339 states and 90520 transitions. [2023-12-15 18:57:06,850 INFO L78 Accepts]: Start accepts. Automaton has 82339 states and 90520 transitions. Word has length 442 [2023-12-15 18:57:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:57:06,851 INFO L495 AbstractCegarLoop]: Abstraction has 82339 states and 90520 transitions. [2023-12-15 18:57:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 18:57:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 82339 states and 90520 transitions. [2023-12-15 18:57:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-15 18:57:06,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:57:06,859 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:06,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:57:07,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 18:57:07,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:57:07,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:57:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1085783272, now seen corresponding path program 1 times [2023-12-15 18:57:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:57:07,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194190682] [2023-12-15 18:57:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:57:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:57:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:57:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 407 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-15 18:57:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:57:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194190682] [2023-12-15 18:57:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194190682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:57:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:57:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:57:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849968544] [2023-12-15 18:57:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:57:07,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:57:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:57:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:57:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:57:07,381 INFO L87 Difference]: Start difference. First operand 82339 states and 90520 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 18:57:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:57:09,036 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 18:57:09,036 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 515 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:57:09,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1043 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:57:09,037 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:57:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:57:09,038 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (82339states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (28216 states constructed, input type IntersectNwa). [2023-12-15 18:57:09,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:57:09,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:57:09,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:57:09 BoogieIcfgContainer [2023-12-15 18:57:09,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:57:09,044 INFO L158 Benchmark]: Toolchain (without parser) took 60071.10ms. Allocated memory was 227.5MB in the beginning and 4.2GB in the end (delta: 4.0GB). Free memory was 161.7MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 18:57:09,044 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 227.5MB. Free memory was 176.6MB in the beginning and 176.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:57:09,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1444.69ms. Allocated memory was 227.5MB in the beginning and 297.8MB in the end (delta: 70.3MB). Free memory was 161.4MB in the beginning and 182.3MB in the end (delta: -20.9MB). Peak memory consumption was 119.0MB. Max. memory is 8.0GB. [2023-12-15 18:57:09,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 442.39ms. Allocated memory is still 297.8MB. Free memory was 182.3MB in the beginning and 169.7MB in the end (delta: 12.7MB). Peak memory consumption was 106.0MB. Max. memory is 8.0GB. [2023-12-15 18:57:09,045 INFO L158 Benchmark]: Boogie Preprocessor took 497.31ms. Allocated memory was 297.8MB in the beginning and 502.3MB in the end (delta: 204.5MB). Free memory was 169.7MB in the beginning and 299.7MB in the end (delta: -130.0MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. [2023-12-15 18:57:09,045 INFO L158 Benchmark]: RCFGBuilder took 3897.82ms. Allocated memory was 502.3MB in the beginning and 779.1MB in the end (delta: 276.8MB). Free memory was 299.7MB in the beginning and 381.5MB in the end (delta: -81.8MB). Peak memory consumption was 197.1MB. Max. memory is 8.0GB. [2023-12-15 18:57:09,046 INFO L158 Benchmark]: TraceAbstraction took 53782.92ms. Allocated memory was 779.1MB in the beginning and 4.2GB in the end (delta: 3.4GB). Free memory was 380.4MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 18:57:09,047 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 227.5MB. Free memory was 176.6MB in the beginning and 176.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1444.69ms. Allocated memory was 227.5MB in the beginning and 297.8MB in the end (delta: 70.3MB). Free memory was 161.4MB in the beginning and 182.3MB in the end (delta: -20.9MB). Peak memory consumption was 119.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 442.39ms. Allocated memory is still 297.8MB. Free memory was 182.3MB in the beginning and 169.7MB in the end (delta: 12.7MB). Peak memory consumption was 106.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 497.31ms. Allocated memory was 297.8MB in the beginning and 502.3MB in the end (delta: 204.5MB). Free memory was 169.7MB in the beginning and 299.7MB in the end (delta: -130.0MB). Peak memory consumption was 92.8MB. Max. memory is 8.0GB. * RCFGBuilder took 3897.82ms. Allocated memory was 502.3MB in the beginning and 779.1MB in the end (delta: 276.8MB). Free memory was 299.7MB in the beginning and 381.5MB in the end (delta: -81.8MB). Peak memory consumption was 197.1MB. Max. memory is 8.0GB. * TraceAbstraction took 53782.92ms. Allocated memory was 779.1MB in the beginning and 4.2GB in the end (delta: 3.4GB). Free memory was 380.4MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. 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: 76]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 76). Cancelled while NwaCegarLoop was constructing difference of abstraction (82339states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (28216 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.7s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 41.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12925 SdHoareTripleChecker+Valid, 37.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12925 mSDsluCounter, 15481 SdHoareTripleChecker+Invalid, 31.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1669 mSDsCounter, 8046 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34579 IncrementalHoareTripleChecker+Invalid, 42625 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8046 mSolverCounterUnsat, 13812 mSDtfsCounter, 34579 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 855 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83137occurred in iteration=10, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 38109 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 4146 NumberOfCodeBlocks, 4146 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4131 ConstructedInterpolants, 0 QuantifiedInterpolants, 15110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1114 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 4622/4848 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 [2023-12-15 18:57:09,052 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown