/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/Problem18_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:16:26,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:16:26,205 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 19:16:26,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:16:26,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:16:26,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:16:26,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:16:26,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:16:26,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:16:26,239 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:16:26,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:16:26,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:16:26,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:16:26,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:16:26,246 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:16:26,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:16:26,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:16:26,247 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:16:26,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:16:26,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:16:26,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:16:26,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:16:26,249 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:16:26,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:16:26,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:16:26,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:16:26,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:16:26,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:16:26,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:16:26,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:16:26,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:16:26,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:16:26,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:16:26,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:16:26,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:16:26,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:16:26,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:16:26,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:16:26,487 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:16:26,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2023-12-15 19:16:27,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:16:28,058 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:16:28,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2023-12-15 19:16:28,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9f8401ec/7eab425f2a1b4d0b8875951055b482b2/FLAGcf82087b1 [2023-12-15 19:16:28,103 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9f8401ec/7eab425f2a1b4d0b8875951055b482b2 [2023-12-15 19:16:28,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:16:28,106 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:16:28,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:16:28,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:16:28,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:16:28,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:16:28" (1/1) ... [2023-12-15 19:16:28,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3709b9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:28, skipping insertion in model container [2023-12-15 19:16:28,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:16:28" (1/1) ... [2023-12-15 19:16:28,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:16:28,415 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/Problem18_label57.c[1255,1268] [2023-12-15 19:16:28,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:16:28,983 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:16:28,995 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/Problem18_label57.c[1255,1268] [2023-12-15 19:16:29,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:16:29,267 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:16:29,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29 WrapperNode [2023-12-15 19:16:29,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:16:29,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:16:29,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:16:29,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:16:29,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,544 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2023-12-15 19:16:29,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:16:29,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:16:29,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:16:29,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:16:29,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,638 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 19:16:29,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:16:29,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:16:29,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:16:29,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:16:29,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (1/1) ... [2023-12-15 19:16:29,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:16:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:16:29,877 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 19:16:29,908 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 19:16:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:16:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:16:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:16:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:16:29,973 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:16:29,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:16:32,790 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:16:32,851 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:16:32,851 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:16:32,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:16:32 BoogieIcfgContainer [2023-12-15 19:16:32,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:16:32,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:16:32,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:16:32,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:16:32,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:16:28" (1/3) ... [2023-12-15 19:16:32,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7ef600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:16:32, skipping insertion in model container [2023-12-15 19:16:32,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:16:29" (2/3) ... [2023-12-15 19:16:32,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7ef600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:16:32, skipping insertion in model container [2023-12-15 19:16:32,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:16:32" (3/3) ... [2023-12-15 19:16:32,860 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57.c [2023-12-15 19:16:32,875 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:16:32,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:16:32,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:16:32,956 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;@348772c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:16:32,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:16:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 19:16:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-15 19:16:32,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:32,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:32,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:32,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 397298174, now seen corresponding path program 1 times [2023-12-15 19:16:32,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:32,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077345288] [2023-12-15 19:16:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:33,137 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 19:16:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077345288] [2023-12-15 19:16:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077345288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:33,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862491428] [2023-12-15 19:16:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:16:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:16:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:16:33,176 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 19:16:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:33,276 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-15 19:16:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:16:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-15 19:16:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:33,293 INFO L225 Difference]: With dead ends: 1389 [2023-12-15 19:16:33,294 INFO L226 Difference]: Without dead ends: 693 [2023-12-15 19:16:33,299 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 19:16:33,302 INFO L413 NwaCegarLoop]: 1317 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, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:16:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-15 19:16:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-15 19:16:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states 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 19:16:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-15 19:16:33,374 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 7 [2023-12-15 19:16:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:33,374 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-15 19:16:33,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 19:16:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-15 19:16:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-15 19:16:33,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:33,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:16:33,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:33,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash 393806861, now seen corresponding path program 1 times [2023-12-15 19:16:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097558196] [2023-12-15 19:16:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:33,434 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 19:16:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097558196] [2023-12-15 19:16:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097558196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602632602] [2023-12-15 19:16:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:33,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:33,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:33,440 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 19:16:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:36,254 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2023-12-15 19:16:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-15 19:16:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:36,260 INFO L225 Difference]: With dead ends: 2075 [2023-12-15 19:16:36,261 INFO L226 Difference]: Without dead ends: 1383 [2023-12-15 19:16:36,263 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 19:16:36,264 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 712 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:36,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 248 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 19:16:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-15 19:16:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2023-12-15 19:16:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.7344428364688858) internal successors, (2397), 1382 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states 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 19:16:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2397 transitions. [2023-12-15 19:16:36,297 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2397 transitions. Word has length 7 [2023-12-15 19:16:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:36,298 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2397 transitions. [2023-12-15 19:16:36,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 19:16:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2397 transitions. [2023-12-15 19:16:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 19:16:36,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:36,302 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:16:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:16:36,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:36,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 957835485, now seen corresponding path program 1 times [2023-12-15 19:16:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:36,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126135015] [2023-12-15 19:16:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:16:36,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:36,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126135015] [2023-12-15 19:16:36,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126135015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855717478] [2023-12-15 19:16:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:16:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:16:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:16:36,624 INFO L87 Difference]: Start difference. First operand 1383 states and 2397 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 19:16:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:40,643 INFO L93 Difference]: Finished difference Result 4841 states and 8274 transitions. [2023-12-15 19:16:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:16:40,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-15 19:16:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:40,657 INFO L225 Difference]: With dead ends: 4841 [2023-12-15 19:16:40,657 INFO L226 Difference]: Without dead ends: 3459 [2023-12-15 19:16:40,661 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 19:16:40,661 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 2035 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 4689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:40,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 133 Invalid, 4689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-15 19:16:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-15 19:16:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3453. [2023-12-15 19:16:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 1.541135573580533) internal successors, (5320), 3452 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states 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 19:16:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5320 transitions. [2023-12-15 19:16:40,722 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5320 transitions. Word has length 76 [2023-12-15 19:16:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:40,723 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 5320 transitions. [2023-12-15 19:16:40,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 19:16:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5320 transitions. [2023-12-15 19:16:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-15 19:16:40,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:40,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:40,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:16:40,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1502706708, now seen corresponding path program 1 times [2023-12-15 19:16:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055342141] [2023-12-15 19:16:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:16:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055342141] [2023-12-15 19:16:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055342141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308252072] [2023-12-15 19:16:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:40,960 INFO L87 Difference]: Start difference. First operand 3453 states and 5320 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 19:16:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:43,532 INFO L93 Difference]: Finished difference Result 8285 states and 13161 transitions. [2023-12-15 19:16:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-15 19:16:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:43,550 INFO L225 Difference]: With dead ends: 8285 [2023-12-15 19:16:43,550 INFO L226 Difference]: Without dead ends: 4833 [2023-12-15 19:16:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:43,556 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 714 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 158 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 19:16:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2023-12-15 19:16:43,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4833. [2023-12-15 19:16:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4833 states, 4832 states have (on average 1.5740894039735098) internal successors, (7606), 4832 states have internal predecessors, (7606), 0 states have call successors, (0), 0 states 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 19:16:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 7606 transitions. [2023-12-15 19:16:43,639 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 7606 transitions. Word has length 125 [2023-12-15 19:16:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:43,640 INFO L495 AbstractCegarLoop]: Abstraction has 4833 states and 7606 transitions. [2023-12-15 19:16:43,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 19:16:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 7606 transitions. [2023-12-15 19:16:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:16:43,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:43,644 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:43,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:16:43,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:43,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1048133149, now seen corresponding path program 1 times [2023-12-15 19:16:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010525153] [2023-12-15 19:16:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:43,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 19:16:44,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010525153] [2023-12-15 19:16:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010525153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:44,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:44,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841396245] [2023-12-15 19:16:44,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:16:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:16:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:16:44,167 INFO L87 Difference]: Start difference. First operand 4833 states and 7606 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 19:16:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:47,775 INFO L93 Difference]: Finished difference Result 13115 states and 20535 transitions. [2023-12-15 19:16:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:16:47,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 19:16:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:47,798 INFO L225 Difference]: With dead ends: 13115 [2023-12-15 19:16:47,798 INFO L226 Difference]: Without dead ends: 8283 [2023-12-15 19:16:47,804 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 19:16:47,805 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1922 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 4733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:47,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 645 Invalid, 4733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 19:16:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2023-12-15 19:16:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 7593. [2023-12-15 19:16:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.3780295047418336) internal successors, (10462), 7592 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states 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 19:16:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 10462 transitions. [2023-12-15 19:16:47,932 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 10462 transitions. Word has length 184 [2023-12-15 19:16:47,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:47,933 INFO L495 AbstractCegarLoop]: Abstraction has 7593 states and 10462 transitions. [2023-12-15 19:16:47,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 19:16:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 10462 transitions. [2023-12-15 19:16:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 19:16:47,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:47,937 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:16:47,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:47,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1437394320, now seen corresponding path program 1 times [2023-12-15 19:16:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602972720] [2023-12-15 19:16:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:16:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602972720] [2023-12-15 19:16:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602972720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615085803] [2023-12-15 19:16:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:16:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:16:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:16:48,351 INFO L87 Difference]: Start difference. First operand 7593 states and 10462 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 19:16:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:50,924 INFO L93 Difference]: Finished difference Result 17308 states and 24307 transitions. [2023-12-15 19:16:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:16:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2023-12-15 19:16:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:50,954 INFO L225 Difference]: With dead ends: 17308 [2023-12-15 19:16:50,954 INFO L226 Difference]: Without dead ends: 10353 [2023-12-15 19:16:50,964 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 19:16:50,965 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:50,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 633 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 19:16:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2023-12-15 19:16:51,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 9663. [2023-12-15 19:16:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9663 states, 9662 states have (on average 1.2187952804802318) internal successors, (11776), 9662 states have internal predecessors, (11776), 0 states have call successors, (0), 0 states 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 19:16:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 11776 transitions. [2023-12-15 19:16:51,194 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 11776 transitions. Word has length 273 [2023-12-15 19:16:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:51,195 INFO L495 AbstractCegarLoop]: Abstraction has 9663 states and 11776 transitions. [2023-12-15 19:16:51,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 19:16:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 11776 transitions. [2023-12-15 19:16:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2023-12-15 19:16:51,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:51,216 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:51,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:16:51,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:51,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 556725060, now seen corresponding path program 1 times [2023-12-15 19:16:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675953660] [2023-12-15 19:16:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-15 19:16:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675953660] [2023-12-15 19:16:52,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675953660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:52,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144380630] [2023-12-15 19:16:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:52,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:52,051 INFO L87 Difference]: Start difference. First operand 9663 states and 11776 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:16:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:54,212 INFO L93 Difference]: Finished difference Result 22775 states and 29005 transitions. [2023-12-15 19:16:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 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 891 [2023-12-15 19:16:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:54,241 INFO L225 Difference]: With dead ends: 22775 [2023-12-15 19:16:54,241 INFO L226 Difference]: Without dead ends: 13803 [2023-12-15 19:16:54,253 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 19:16:54,256 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 215 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 405 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:16:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2023-12-15 19:16:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 11733. [2023-12-15 19:16:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11732 states have (on average 1.1950221616092738) internal successors, (14020), 11732 states have internal predecessors, (14020), 0 states have call successors, (0), 0 states 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 19:16:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 14020 transitions. [2023-12-15 19:16:54,440 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 14020 transitions. Word has length 891 [2023-12-15 19:16:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:54,442 INFO L495 AbstractCegarLoop]: Abstraction has 11733 states and 14020 transitions. [2023-12-15 19:16:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:16:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 14020 transitions. [2023-12-15 19:16:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2023-12-15 19:16:54,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:54,463 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:54,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:16:54,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:54,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1815793661, now seen corresponding path program 1 times [2023-12-15 19:16:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:54,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332795971] [2023-12-15 19:16:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:54,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-12-15 19:16:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332795971] [2023-12-15 19:16:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332795971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:16:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641609705] [2023-12-15 19:16:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:55,421 INFO L87 Difference]: Start difference. First operand 11733 states and 14020 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:16:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:16:57,512 INFO L93 Difference]: Finished difference Result 27605 states and 33273 transitions. [2023-12-15 19:16:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:16:57,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 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 906 [2023-12-15 19:16:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:16:57,540 INFO L225 Difference]: With dead ends: 27605 [2023-12-15 19:16:57,540 INFO L226 Difference]: Without dead ends: 16563 [2023-12-15 19:16:57,552 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 19:16:57,553 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 180 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:16:57,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 428 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:16:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16563 states. [2023-12-15 19:16:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16563 to 16563. [2023-12-15 19:16:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16563 states, 16562 states have (on average 1.1617558265909915) internal successors, (19241), 16562 states have internal predecessors, (19241), 0 states have call successors, (0), 0 states 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 19:16:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16563 states to 16563 states and 19241 transitions. [2023-12-15 19:16:57,803 INFO L78 Accepts]: Start accepts. Automaton has 16563 states and 19241 transitions. Word has length 906 [2023-12-15 19:16:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:16:57,805 INFO L495 AbstractCegarLoop]: Abstraction has 16563 states and 19241 transitions. [2023-12-15 19:16:57,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 2 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:16:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 16563 states and 19241 transitions. [2023-12-15 19:16:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2023-12-15 19:16:57,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:16:57,827 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:16:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:16:57,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:16:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:16:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1648598500, now seen corresponding path program 1 times [2023-12-15 19:16:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:16:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990154574] [2023-12-15 19:16:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:16:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:16:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:16:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-12-15 19:16:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:16:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990154574] [2023-12-15 19:16:58,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990154574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:16:58,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:16:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:16:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943009819] [2023-12-15 19:16:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:16:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:16:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:16:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:16:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:16:58,564 INFO L87 Difference]: Start difference. First operand 16563 states and 19241 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:17:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:17:00,646 INFO L93 Difference]: Finished difference Result 35885 states and 42296 transitions. [2023-12-15 19:17:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 907 [2023-12-15 19:17:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:17:00,683 INFO L225 Difference]: With dead ends: 35885 [2023-12-15 19:17:00,684 INFO L226 Difference]: Without dead ends: 20013 [2023-12-15 19:17:00,706 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 19:17:00,708 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 692 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:00,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1079 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:17:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20013 states. [2023-12-15 19:17:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20013 to 20013. [2023-12-15 19:17:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20013 states, 20012 states have (on average 1.1574555266839897) internal successors, (23163), 20012 states have internal predecessors, (23163), 0 states have call successors, (0), 0 states 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 19:17:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20013 states to 20013 states and 23163 transitions. [2023-12-15 19:17:00,953 INFO L78 Accepts]: Start accepts. Automaton has 20013 states and 23163 transitions. Word has length 907 [2023-12-15 19:17:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:17:00,954 INFO L495 AbstractCegarLoop]: Abstraction has 20013 states and 23163 transitions. [2023-12-15 19:17:00,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 19:17:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 20013 states and 23163 transitions. [2023-12-15 19:17:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2023-12-15 19:17:00,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:17:00,965 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:17:00,965 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:17:00,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:17:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash -683619706, now seen corresponding path program 1 times [2023-12-15 19:17:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:17:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232997453] [2023-12-15 19:17:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:17:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-15 19:17:02,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:17:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232997453] [2023-12-15 19:17:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232997453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:17:02,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:17:02,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:17:02,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990869093] [2023-12-15 19:17:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:17:02,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:17:02,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:17:02,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:17:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:17:02,231 INFO L87 Difference]: Start difference. First operand 20013 states and 23163 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:17:04,047 INFO L93 Difference]: Finished difference Result 40025 states and 46327 transitions. [2023-12-15 19:17:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 928 [2023-12-15 19:17:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:17:04,077 INFO L225 Difference]: With dead ends: 40025 [2023-12-15 19:17:04,077 INFO L226 Difference]: Without dead ends: 20703 [2023-12-15 19:17:04,094 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 19:17:04,095 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 586 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:04,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1010 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:17:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2023-12-15 19:17:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2023-12-15 19:17:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.1310501400830837) internal successors, (23415), 20702 states have internal predecessors, (23415), 0 states have call successors, (0), 0 states 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 19:17:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 23415 transitions. [2023-12-15 19:17:04,337 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 23415 transitions. Word has length 928 [2023-12-15 19:17:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:17:04,338 INFO L495 AbstractCegarLoop]: Abstraction has 20703 states and 23415 transitions. [2023-12-15 19:17:04,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 23415 transitions. [2023-12-15 19:17:04,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2023-12-15 19:17:04,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:17:04,348 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:17:04,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:17:04,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:17:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -487344941, now seen corresponding path program 1 times [2023-12-15 19:17:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:17:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428388755] [2023-12-15 19:17:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:17:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-15 19:17:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:17:05,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428388755] [2023-12-15 19:17:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428388755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:17:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:17:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:17:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617639518] [2023-12-15 19:17:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:17:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:17:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:17:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:17:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:17:05,464 INFO L87 Difference]: Start difference. First operand 20703 states and 23415 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:17:07,281 INFO L93 Difference]: Finished difference Result 44165 states and 50237 transitions. [2023-12-15 19:17:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:07,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 935 [2023-12-15 19:17:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:17:07,315 INFO L225 Difference]: With dead ends: 44165 [2023-12-15 19:17:07,315 INFO L226 Difference]: Without dead ends: 24843 [2023-12-15 19:17:07,331 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 19:17:07,331 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 586 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:07,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 352 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:17:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24843 states. [2023-12-15 19:17:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24843 to 24153. [2023-12-15 19:17:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24153 states, 24152 states have (on average 1.1317075190460417) internal successors, (27333), 24152 states have internal predecessors, (27333), 0 states have call successors, (0), 0 states 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 19:17:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24153 states to 24153 states and 27333 transitions. [2023-12-15 19:17:07,598 INFO L78 Accepts]: Start accepts. Automaton has 24153 states and 27333 transitions. Word has length 935 [2023-12-15 19:17:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:17:07,599 INFO L495 AbstractCegarLoop]: Abstraction has 24153 states and 27333 transitions. [2023-12-15 19:17:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 24153 states and 27333 transitions. [2023-12-15 19:17:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2023-12-15 19:17:07,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:17:07,609 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:17:07,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:17:07,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:17:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -276467249, now seen corresponding path program 1 times [2023-12-15 19:17:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:17:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356250785] [2023-12-15 19:17:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:17:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-12-15 19:17:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:17:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356250785] [2023-12-15 19:17:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356250785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:17:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:17:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:17:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075705959] [2023-12-15 19:17:08,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:17:08,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:17:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:17:08,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:17:08,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:17:08,351 INFO L87 Difference]: Start difference. First operand 24153 states and 27333 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:17:10,270 INFO L93 Difference]: Finished difference Result 54515 states and 62016 transitions. [2023-12-15 19:17:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 1014 [2023-12-15 19:17:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:17:10,314 INFO L225 Difference]: With dead ends: 54515 [2023-12-15 19:17:10,315 INFO L226 Difference]: Without dead ends: 31743 [2023-12-15 19:17:10,334 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 19:17:10,334 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 584 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:10,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1132 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:17:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31743 states. [2023-12-15 19:17:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31743 to 31743. [2023-12-15 19:17:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31743 states, 31742 states have (on average 1.1102955075294563) internal successors, (35243), 31742 states have internal predecessors, (35243), 0 states have call successors, (0), 0 states 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 19:17:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31743 states to 31743 states and 35243 transitions. [2023-12-15 19:17:10,737 INFO L78 Accepts]: Start accepts. Automaton has 31743 states and 35243 transitions. Word has length 1014 [2023-12-15 19:17:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:17:10,737 INFO L495 AbstractCegarLoop]: Abstraction has 31743 states and 35243 transitions. [2023-12-15 19:17:10,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 19:17:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states and 35243 transitions. [2023-12-15 19:17:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2023-12-15 19:17:10,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:17:10,749 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:10,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:17:10,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:17:10,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:17:10,749 INFO L85 PathProgramCache]: Analyzing trace with hash -734930594, now seen corresponding path program 1 times [2023-12-15 19:17:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:17:10,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497078972] [2023-12-15 19:17:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:10,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:17:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 436 proven. 330 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 19:17:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:17:12,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497078972] [2023-12-15 19:17:12,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497078972] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:17:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869709345] [2023-12-15 19:17:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:12,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:17:12,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:17:12,591 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 19:17:12,603 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 19:17:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:12,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:17:12,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:17:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2023-12-15 19:17:13,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:17:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869709345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:17:13,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:17:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 19:17:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959901391] [2023-12-15 19:17:13,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:17:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:17:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:17:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:17:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:17:13,024 INFO L87 Difference]: Start difference. First operand 31743 states and 35243 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 19:17:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:17:15,044 INFO L93 Difference]: Finished difference Result 71765 states and 81443 transitions. [2023-12-15 19:17:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 1016 [2023-12-15 19:17:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:17:15,098 INFO L225 Difference]: With dead ends: 71765 [2023-12-15 19:17:15,098 INFO L226 Difference]: Without dead ends: 41403 [2023-12-15 19:17:15,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:17:15,123 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 693 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:15,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1141 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:17:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2023-12-15 19:17:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 41403. [2023-12-15 19:17:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41403 states, 41402 states have (on average 1.1067098207816048) internal successors, (45820), 41402 states have internal predecessors, (45820), 0 states have call successors, (0), 0 states 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 19:17:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41403 states to 41403 states and 45820 transitions. [2023-12-15 19:17:15,611 INFO L78 Accepts]: Start accepts. Automaton has 41403 states and 45820 transitions. Word has length 1016 [2023-12-15 19:17:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:17:15,612 INFO L495 AbstractCegarLoop]: Abstraction has 41403 states and 45820 transitions. [2023-12-15 19:17:15,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 19:17:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 41403 states and 45820 transitions. [2023-12-15 19:17:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2023-12-15 19:17:15,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:17:15,624 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:15,635 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 19:17:15,832 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,SelfDestructingSolverStorable12 [2023-12-15 19:17:15,833 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:17:15,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:17:15,833 INFO L85 PathProgramCache]: Analyzing trace with hash -13785169, now seen corresponding path program 1 times [2023-12-15 19:17:15,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:17:15,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900146803] [2023-12-15 19:17:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:15,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:17:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 373 proven. 576 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-15 19:17:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:17:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900146803] [2023-12-15 19:17:17,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900146803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:17:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155867478] [2023-12-15 19:17:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:17:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:17:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:17:17,174 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 19:17:17,192 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 19:17:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:17:17,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:17:17,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:17:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-12-15 19:17:17,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:17:17,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155867478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:17:17,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:17:17,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-15 19:17:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388552842] [2023-12-15 19:17:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:17:17,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:17:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:17:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:17:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:17:17,760 INFO L87 Difference]: Start difference. First operand 41403 states and 45820 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 19:17:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:17:18,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:17:18,377 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 622 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:17:18,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 8 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:17:18,378 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:17:18,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:17:18,395 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:17:18,399 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:17:18,579 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,SelfDestructingSolverStorable13 [2023-12-15 19:17:18,580 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (41403states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (2698 states constructed, input type IntersectNwa). [2023-12-15 19:17:18,583 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:17:18,585 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:17:18,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:17:18 BoogieIcfgContainer [2023-12-15 19:17:18,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:17:18,587 INFO L158 Benchmark]: Toolchain (without parser) took 50480.65ms. Allocated memory was 195.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 139.0MB in the beginning and 801.4MB in the end (delta: -662.4MB). Peak memory consumption was 377.7MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,587 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:17:18,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1160.38ms. Allocated memory is still 195.0MB. Free memory was 139.0MB in the beginning and 89.7MB in the end (delta: 49.4MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 274.02ms. Allocated memory was 195.0MB in the beginning and 259.0MB in the end (delta: 64.0MB). Free memory was 89.7MB in the beginning and 197.4MB in the end (delta: -107.8MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,589 INFO L158 Benchmark]: Boogie Preprocessor took 243.40ms. Allocated memory is still 259.0MB. Free memory was 197.4MB in the beginning and 140.3MB in the end (delta: 57.1MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,589 INFO L158 Benchmark]: RCFGBuilder took 3061.11ms. Allocated memory was 259.0MB in the beginning and 396.4MB in the end (delta: 137.4MB). Free memory was 140.3MB in the beginning and 250.4MB in the end (delta: -110.1MB). Peak memory consumption was 105.4MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,589 INFO L158 Benchmark]: TraceAbstraction took 45732.87ms. Allocated memory was 396.4MB in the beginning and 1.2GB in the end (delta: 837.8MB). Free memory was 249.3MB in the beginning and 801.4MB in the end (delta: -552.1MB). Peak memory consumption was 286.3MB. Max. memory is 8.0GB. [2023-12-15 19:17:18,596 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1160.38ms. Allocated memory is still 195.0MB. Free memory was 139.0MB in the beginning and 89.7MB in the end (delta: 49.4MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 274.02ms. Allocated memory was 195.0MB in the beginning and 259.0MB in the end (delta: 64.0MB). Free memory was 89.7MB in the beginning and 197.4MB in the end (delta: -107.8MB). Peak memory consumption was 53.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 243.40ms. Allocated memory is still 259.0MB. Free memory was 197.4MB in the beginning and 140.3MB in the end (delta: 57.1MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * RCFGBuilder took 3061.11ms. Allocated memory was 259.0MB in the beginning and 396.4MB in the end (delta: 137.4MB). Free memory was 140.3MB in the beginning and 250.4MB in the end (delta: -110.1MB). Peak memory consumption was 105.4MB. Max. memory is 8.0GB. * TraceAbstraction took 45732.87ms. Allocated memory was 396.4MB in the beginning and 1.2GB in the end (delta: 837.8MB). Free memory was 249.3MB in the beginning and 801.4MB in the end (delta: -552.1MB). Peak memory consumption was 286.3MB. 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: 43]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 43). Cancelled while NwaCegarLoop was constructing difference of abstraction (41403states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (2698 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 695 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.7s, OverallIterations: 14, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10070 SdHoareTripleChecker+Valid, 28.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10070 mSDsluCounter, 8689 SdHoareTripleChecker+Invalid, 23.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 7225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28202 IncrementalHoareTripleChecker+Invalid, 35427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7225 mSolverCounterUnsat, 8589 mSDtfsCounter, 28202 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2120 GetRequests, 2091 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41403occurred in iteration=13, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 4146 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 10401 NumberOfCodeBlocks, 10401 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 10385 ConstructedInterpolants, 0 QuantifiedInterpolants, 33675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2426 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 6146/7052 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown