/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:40:12,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:40:12,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:40:12,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:40:12,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:40:12,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:40:12,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:40:12,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:40:12,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:40:12,240 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:40:12,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:40:12,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:40:12,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:40:12,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:40:12,242 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:40:12,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:40:12,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:40:12,243 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:40:12,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:40:12,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:40:12,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:40:12,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:40:12,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:40:12,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:40:12,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:40:12,245 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:40:12,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:40:12,245 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:40:12,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:40:12,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:40:12,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:40:12,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:40:12,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:40:12,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:40:12,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:40:12,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:40:12,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:40:12,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:40:12,249 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:40:12,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:40:12,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:40:12,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:40:12,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:40:12,516 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:40:12,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-20 13:40:13,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:40:14,036 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:40:14,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-20 13:40:14,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c79a0149/6f26903d7a1c4e5381cbaf4be1b6c7cc/FLAGc690867aa [2023-12-20 13:40:14,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c79a0149/6f26903d7a1c4e5381cbaf4be1b6c7cc [2023-12-20 13:40:14,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:40:14,085 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:40:14,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:40:14,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:40:14,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:40:14,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:40:14" (1/1) ... [2023-12-20 13:40:14,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34260f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:14, skipping insertion in model container [2023-12-20 13:40:14,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:40:14" (1/1) ... [2023-12-20 13:40:14,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:40:14,506 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[11640,11653] [2023-12-20 13:40:14,564 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[18576,18589] [2023-12-20 13:40:15,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:40:15,226 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:40:15,265 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[11640,11653] [2023-12-20 13:40:15,279 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[18576,18589] [2023-12-20 13:40:15,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:40:15,629 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:40:15,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15 WrapperNode [2023-12-20 13:40:15,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:40:15,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:40:15,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:40:15,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:40:15,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:15,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:15,948 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-12-20 13:40:15,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:40:15,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:40:15,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:40:15,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:40:15,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:15,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:15,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,082 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 13:40:16,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:40:16,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:40:16,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:40:16,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:40:16,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (1/1) ... [2023-12-20 13:40:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:40:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:16,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 13:40:16,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 13:40:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:40:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:40:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:40:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:40:16,636 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:40:16,638 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:40:20,503 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:40:20,570 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:40:20,570 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:40:20,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:40:20 BoogieIcfgContainer [2023-12-20 13:40:20,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:40:20,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:40:20,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:40:20,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:40:20,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:40:14" (1/3) ... [2023-12-20 13:40:20,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8e0c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:40:20, skipping insertion in model container [2023-12-20 13:40:20,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:40:15" (2/3) ... [2023-12-20 13:40:20,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8e0c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:40:20, skipping insertion in model container [2023-12-20 13:40:20,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:40:20" (3/3) ... [2023-12-20 13:40:20,579 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-20 13:40:20,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:40:20,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:40:20,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:40:20,665 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;@77421ae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:40:20,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:40:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:40:20,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:20,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:20,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1694538375, now seen corresponding path program 1 times [2023-12-20 13:40:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570943225] [2023-12-20 13:40:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570943225] [2023-12-20 13:40:20,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570943225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:20,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:20,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:40:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898460603] [2023-12-20 13:40:20,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:20,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:40:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:40:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:40:20,953 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:21,050 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-20 13:40:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:40:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:40:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:21,075 INFO L225 Difference]: With dead ends: 1633 [2023-12-20 13:40:21,075 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:40:21,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:40:21,085 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:21,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:40:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:40:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-20 13:40:21,172 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-20 13:40:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:21,172 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-20 13:40:21,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-20 13:40:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:40:21,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:21,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:40:21,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:21,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash 106190473, now seen corresponding path program 1 times [2023-12-20 13:40:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397020837] [2023-12-20 13:40:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397020837] [2023-12-20 13:40:21,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397020837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:21,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:21,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:40:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654828940] [2023-12-20 13:40:21,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:21,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:40:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:40:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:40:21,507 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:21,597 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-20 13:40:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:40:21,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:40:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:21,602 INFO L225 Difference]: With dead ends: 874 [2023-12-20 13:40:21,602 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:40:21,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:40:21,604 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:21,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:40:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:40:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-20 13:40:21,626 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-20 13:40:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:21,626 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-20 13:40:21,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-20 13:40:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 13:40:21,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:21,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:21,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:40:21,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:21,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash -945525728, now seen corresponding path program 1 times [2023-12-20 13:40:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:21,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447942991] [2023-12-20 13:40:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:21,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:21,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447942991] [2023-12-20 13:40:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447942991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745574090] [2023-12-20 13:40:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:21,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:21,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:21,853 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:22,084 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-20 13:40:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 13:40:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-20 13:40:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:22,089 INFO L225 Difference]: With dead ends: 1240 [2023-12-20 13:40:22,089 INFO L226 Difference]: Without dead ends: 1199 [2023-12-20 13:40:22,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 13:40:22,093 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:22,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-20 13:40:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-20 13:40:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-20 13:40:22,119 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-20 13:40:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-20 13:40:22,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-20 13:40:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:40:22,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:22,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:40:22,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:22,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1737092336, now seen corresponding path program 1 times [2023-12-20 13:40:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271099250] [2023-12-20 13:40:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271099250] [2023-12-20 13:40:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271099250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:22,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363341305] [2023-12-20 13:40:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:22,267 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:22,301 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-20 13:40:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 13:40:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:22,305 INFO L225 Difference]: With dead ends: 1018 [2023-12-20 13:40:22,306 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:40:22,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:22,311 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:22,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:40:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:40:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-20 13:40:22,331 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-20 13:40:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:22,332 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-20 13:40:22,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-20 13:40:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:40:22,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:22,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:22,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:40:22,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:22,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1739237288, now seen corresponding path program 1 times [2023-12-20 13:40:22,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:22,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792989967] [2023-12-20 13:40:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:22,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:22,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792989967] [2023-12-20 13:40:22,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792989967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:22,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:22,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:22,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721695794] [2023-12-20 13:40:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:22,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:22,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:22,622 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:22,805 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-20 13:40:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:22,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 13:40:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:22,811 INFO L225 Difference]: With dead ends: 1085 [2023-12-20 13:40:22,811 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:40:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:40:22,812 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:22,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:40:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:40:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-20 13:40:22,831 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-20 13:40:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:22,831 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-20 13:40:22,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-20 13:40:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 13:40:22,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:22,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:40:22,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2047294359, now seen corresponding path program 1 times [2023-12-20 13:40:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237979498] [2023-12-20 13:40:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237979498] [2023-12-20 13:40:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237979498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:40:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221162667] [2023-12-20 13:40:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:40:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:40:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:40:23,001 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,039 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-20 13:40:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:40:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-20 13:40:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,043 INFO L225 Difference]: With dead ends: 944 [2023-12-20 13:40:23,043 INFO L226 Difference]: Without dead ends: 942 [2023-12-20 13:40:23,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:40:23,044 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-20 13:40:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-20 13:40:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-20 13:40:23,063 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-20 13:40:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:23,063 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-20 13:40:23,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-20 13:40:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:40:23,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:23,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:23,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:40:23,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:23,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -115097624, now seen corresponding path program 1 times [2023-12-20 13:40:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:23,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548900019] [2023-12-20 13:40:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548900019] [2023-12-20 13:40:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548900019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:23,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553730624] [2023-12-20 13:40:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,110 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,138 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-20 13:40:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:23,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:40:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,142 INFO L225 Difference]: With dead ends: 1102 [2023-12-20 13:40:23,143 INFO L226 Difference]: Without dead ends: 1018 [2023-12-20 13:40:23,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,144 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-20 13:40:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-20 13:40:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-20 13:40:23,165 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-20 13:40:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:23,166 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-20 13:40:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-20 13:40:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:40:23,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:23,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:40:23,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:23,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash -343736856, now seen corresponding path program 1 times [2023-12-20 13:40:23,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:23,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773228244] [2023-12-20 13:40:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:23,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773228244] [2023-12-20 13:40:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773228244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783211381] [2023-12-20 13:40:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,210 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,245 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-20 13:40:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:23,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:40:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,251 INFO L225 Difference]: With dead ends: 1442 [2023-12-20 13:40:23,251 INFO L226 Difference]: Without dead ends: 1217 [2023-12-20 13:40:23,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,252 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-20 13:40:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-20 13:40:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-20 13:40:23,282 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-20 13:40:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:23,282 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-20 13:40:23,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-20 13:40:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:40:23,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:23,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:40:23,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:23,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -969392920, now seen corresponding path program 1 times [2023-12-20 13:40:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:23,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521550025] [2023-12-20 13:40:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:23,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521550025] [2023-12-20 13:40:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521550025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187189931] [2023-12-20 13:40:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,350 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,390 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-20 13:40:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:40:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,397 INFO L225 Difference]: With dead ends: 2015 [2023-12-20 13:40:23,397 INFO L226 Difference]: Without dead ends: 1591 [2023-12-20 13:40:23,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,398 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-20 13:40:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-20 13:40:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-20 13:40:23,440 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-20 13:40:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:23,441 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-20 13:40:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-20 13:40:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:40:23,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:23,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:40:23,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:23,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -80659480, now seen corresponding path program 1 times [2023-12-20 13:40:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401415687] [2023-12-20 13:40:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:23,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:23,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401415687] [2023-12-20 13:40:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401415687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509645911] [2023-12-20 13:40:23,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,507 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,560 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-20 13:40:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:40:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,569 INFO L225 Difference]: With dead ends: 3089 [2023-12-20 13:40:23,570 INFO L226 Difference]: Without dead ends: 2291 [2023-12-20 13:40:23,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,571 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-20 13:40:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-20 13:40:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-20 13:40:23,636 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-20 13:40:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:23,637 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-20 13:40:23,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-20 13:40:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:40:23,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:23,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:23,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:40:23,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:23,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash -383680792, now seen corresponding path program 1 times [2023-12-20 13:40:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:23,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829830185] [2023-12-20 13:40:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:23,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:23,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829830185] [2023-12-20 13:40:23,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829830185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:23,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:23,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393607512] [2023-12-20 13:40:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:23,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,825 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:23,922 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-20 13:40:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 13:40:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:23,935 INFO L225 Difference]: With dead ends: 5093 [2023-12-20 13:40:23,935 INFO L226 Difference]: Without dead ends: 3595 [2023-12-20 13:40:23,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:23,938 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:23,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-20 13:40:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-20 13:40:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-20 13:40:24,186 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-20 13:40:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:24,186 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-20 13:40:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-20 13:40:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 13:40:24,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:24,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:40:24,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:24,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1592910316, now seen corresponding path program 1 times [2023-12-20 13:40:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334940660] [2023-12-20 13:40:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334940660] [2023-12-20 13:40:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334940660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128224435] [2023-12-20 13:40:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:40:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:40:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:40:24,334 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:30,785 INFO L93 Difference]: Finished difference Result 5848 states and 9850 transitions. [2023-12-20 13:40:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:40:30,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-20 13:40:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:30,801 INFO L225 Difference]: With dead ends: 5848 [2023-12-20 13:40:30,801 INFO L226 Difference]: Without dead ends: 5095 [2023-12-20 13:40:30,802 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 [2023-12-20 13:40:30,803 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 2402 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 809 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-20 13:40:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2023-12-20 13:40:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5095. [2023-12-20 13:40:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5093 states have (on average 1.475947378755154) internal successors, (7517), 5094 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7517 transitions. [2023-12-20 13:40:30,920 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7517 transitions. Word has length 59 [2023-12-20 13:40:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:30,921 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7517 transitions. [2023-12-20 13:40:30,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7517 transitions. [2023-12-20 13:40:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:40:30,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:30,926 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:30,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:40:30,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:30,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1747458161, now seen corresponding path program 1 times [2023-12-20 13:40:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36927] [2023-12-20 13:40:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:30,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:40:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36927] [2023-12-20 13:40:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134558844] [2023-12-20 13:40:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:31,073 INFO L87 Difference]: Start difference. First operand 5095 states and 7517 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:31,526 INFO L93 Difference]: Finished difference Result 18883 states and 27507 transitions. [2023-12-20 13:40:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:40:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:31,575 INFO L225 Difference]: With dead ends: 18883 [2023-12-20 13:40:31,575 INFO L226 Difference]: Without dead ends: 16897 [2023-12-20 13:40:31,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:40:31,581 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:31,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16897 states. [2023-12-20 13:40:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16897 to 7495. [2023-12-20 13:40:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7493 states have (on average 1.462298144935273) internal successors, (10957), 7494 states have internal predecessors, (10957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 10957 transitions. [2023-12-20 13:40:31,930 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 10957 transitions. Word has length 73 [2023-12-20 13:40:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:31,930 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 10957 transitions. [2023-12-20 13:40:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 10957 transitions. [2023-12-20 13:40:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:40:31,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:31,933 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:31,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:40:31,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:31,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1518818929, now seen corresponding path program 1 times [2023-12-20 13:40:31,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:31,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607354468] [2023-12-20 13:40:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:40:32,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:32,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607354468] [2023-12-20 13:40:32,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607354468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:32,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:32,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351838871] [2023-12-20 13:40:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:32,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:32,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:32,072 INFO L87 Difference]: Start difference. First operand 7495 states and 10957 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:32,657 INFO L93 Difference]: Finished difference Result 21683 states and 31539 transitions. [2023-12-20 13:40:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-20 13:40:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:32,694 INFO L225 Difference]: With dead ends: 21683 [2023-12-20 13:40:32,694 INFO L226 Difference]: Without dead ends: 18881 [2023-12-20 13:40:32,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:40:32,706 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:32,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18881 states. [2023-12-20 13:40:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18881 to 11287. [2023-12-20 13:40:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11287 states, 11285 states have (on average 1.4515728843597695) internal successors, (16381), 11286 states have internal predecessors, (16381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 16381 transitions. [2023-12-20 13:40:33,107 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 16381 transitions. Word has length 73 [2023-12-20 13:40:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:33,107 INFO L495 AbstractCegarLoop]: Abstraction has 11287 states and 16381 transitions. [2023-12-20 13:40:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 16381 transitions. [2023-12-20 13:40:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:40:33,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:33,110 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:33,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:40:33,110 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:33,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 893162865, now seen corresponding path program 1 times [2023-12-20 13:40:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671399091] [2023-12-20 13:40:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:40:33,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671399091] [2023-12-20 13:40:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671399091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:33,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:33,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505333479] [2023-12-20 13:40:33,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:33,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:33,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:33,245 INFO L87 Difference]: Start difference. First operand 11287 states and 16381 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:33,787 INFO L93 Difference]: Finished difference Result 24483 states and 35555 transitions. [2023-12-20 13:40:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:33,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-20 13:40:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:33,828 INFO L225 Difference]: With dead ends: 24483 [2023-12-20 13:40:33,828 INFO L226 Difference]: Without dead ends: 21681 [2023-12-20 13:40:33,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:40:33,841 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:33,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21681 states. [2023-12-20 13:40:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21681 to 14087. [2023-12-20 13:40:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14085 states have (on average 1.448136315228967) internal successors, (20397), 14086 states have internal predecessors, (20397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 20397 transitions. [2023-12-20 13:40:34,361 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 20397 transitions. Word has length 73 [2023-12-20 13:40:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:34,362 INFO L495 AbstractCegarLoop]: Abstraction has 14087 states and 20397 transitions. [2023-12-20 13:40:34,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 20397 transitions. [2023-12-20 13:40:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:40:34,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:34,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:40:34,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1781896305, now seen corresponding path program 1 times [2023-12-20 13:40:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:34,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994030597] [2023-12-20 13:40:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 13:40:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:34,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994030597] [2023-12-20 13:40:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994030597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911436954] [2023-12-20 13:40:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:34,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:34,491 INFO L87 Difference]: Start difference. First operand 14087 states and 20397 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:35,091 INFO L93 Difference]: Finished difference Result 27283 states and 39571 transitions. [2023-12-20 13:40:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-20 13:40:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:35,139 INFO L225 Difference]: With dead ends: 27283 [2023-12-20 13:40:35,140 INFO L226 Difference]: Without dead ends: 24481 [2023-12-20 13:40:35,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:40:35,153 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:35,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24481 states. [2023-12-20 13:40:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24481 to 16887. [2023-12-20 13:40:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16887 states, 16885 states have (on average 1.445839502517027) internal successors, (24413), 16886 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16887 states to 16887 states and 24413 transitions. [2023-12-20 13:40:35,819 INFO L78 Accepts]: Start accepts. Automaton has 16887 states and 24413 transitions. Word has length 73 [2023-12-20 13:40:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:35,820 INFO L495 AbstractCegarLoop]: Abstraction has 16887 states and 24413 transitions. [2023-12-20 13:40:35,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 16887 states and 24413 transitions. [2023-12-20 13:40:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:40:35,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:35,822 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:35,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:40:35,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:35,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1478874993, now seen corresponding path program 1 times [2023-12-20 13:40:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167389063] [2023-12-20 13:40:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:35,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:40:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167389063] [2023-12-20 13:40:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167389063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:40:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013775261] [2023-12-20 13:40:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:40:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:40:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:40:35,953 INFO L87 Difference]: Start difference. First operand 16887 states and 24413 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:36,730 INFO L93 Difference]: Finished difference Result 30083 states and 43587 transitions. [2023-12-20 13:40:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:40:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:36,780 INFO L225 Difference]: With dead ends: 30083 [2023-12-20 13:40:36,780 INFO L226 Difference]: Without dead ends: 27281 [2023-12-20 13:40:36,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:40:36,790 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:36,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:40:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2023-12-20 13:40:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 19687. [2023-12-20 13:40:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4441960883921767) internal successors, (28429), 19686 states have internal predecessors, (28429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28429 transitions. [2023-12-20 13:40:37,539 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28429 transitions. Word has length 73 [2023-12-20 13:40:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:37,539 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28429 transitions. [2023-12-20 13:40:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28429 transitions. [2023-12-20 13:40:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 13:40:37,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:37,541 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:37,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:40:37,542 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:37,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -499388753, now seen corresponding path program 1 times [2023-12-20 13:40:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459488732] [2023-12-20 13:40:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459488732] [2023-12-20 13:40:37,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459488732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:37,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:37,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535437094] [2023-12-20 13:40:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:37,635 INFO L87 Difference]: Start difference. First operand 19687 states and 28429 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:38,004 INFO L93 Difference]: Finished difference Result 37083 states and 53407 transitions. [2023-12-20 13:40:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:38,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 13:40:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:38,032 INFO L225 Difference]: With dead ends: 37083 [2023-12-20 13:40:38,032 INFO L226 Difference]: Without dead ends: 19689 [2023-12-20 13:40:38,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:38,052 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19689 states. [2023-12-20 13:40:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 19687. [2023-12-20 13:40:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4291592583185166) internal successors, (28133), 19686 states have internal predecessors, (28133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28133 transitions. [2023-12-20 13:40:38,662 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28133 transitions. Word has length 74 [2023-12-20 13:40:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:38,662 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28133 transitions. [2023-12-20 13:40:38,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28133 transitions. [2023-12-20 13:40:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:40:38,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:38,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:40:38,666 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:38,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash -578911559, now seen corresponding path program 1 times [2023-12-20 13:40:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779447380] [2023-12-20 13:40:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:38,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779447380] [2023-12-20 13:40:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779447380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:38,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:38,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239759179] [2023-12-20 13:40:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:38,746 INFO L87 Difference]: Start difference. First operand 19687 states and 28133 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:39,001 INFO L93 Difference]: Finished difference Result 26157 states and 37410 transitions. [2023-12-20 13:40:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-20 13:40:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:39,010 INFO L225 Difference]: With dead ends: 26157 [2023-12-20 13:40:39,010 INFO L226 Difference]: Without dead ends: 8763 [2023-12-20 13:40:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,027 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:39,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2023-12-20 13:40:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 8756. [2023-12-20 13:40:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8754 states have (on average 1.4413982179575051) internal successors, (12618), 8755 states have internal predecessors, (12618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 12618 transitions. [2023-12-20 13:40:39,197 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 12618 transitions. Word has length 75 [2023-12-20 13:40:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:39,197 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 12618 transitions. [2023-12-20 13:40:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 12618 transitions. [2023-12-20 13:40:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 13:40:39,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:39,199 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:39,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:40:39,199 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:39,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1341806013, now seen corresponding path program 1 times [2023-12-20 13:40:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149490018] [2023-12-20 13:40:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:39,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149490018] [2023-12-20 13:40:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149490018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907120212] [2023-12-20 13:40:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,277 INFO L87 Difference]: Start difference. First operand 8756 states and 12618 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) 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) [2023-12-20 13:40:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:39,380 INFO L93 Difference]: Finished difference Result 11984 states and 17196 transitions. [2023-12-20 13:40:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:39,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) 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 [2023-12-20 13:40:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:39,386 INFO L225 Difference]: With dead ends: 11984 [2023-12-20 13:40:39,387 INFO L226 Difference]: Without dead ends: 5534 [2023-12-20 13:40:39,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,393 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:39,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-12-20 13:40:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5532. [2023-12-20 13:40:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5530 states have (on average 1.4448462929475587) internal successors, (7990), 5531 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 7990 transitions. [2023-12-20 13:40:39,509 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 7990 transitions. Word has length 76 [2023-12-20 13:40:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:39,510 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 7990 transitions. [2023-12-20 13:40:39,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) 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) [2023-12-20 13:40:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 7990 transitions. [2023-12-20 13:40:39,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 13:40:39,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:39,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 13:40:39,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:39,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1967707723, now seen corresponding path program 1 times [2023-12-20 13:40:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81317134] [2023-12-20 13:40:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:39,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81317134] [2023-12-20 13:40:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81317134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:39,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:39,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:39,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534051923] [2023-12-20 13:40:39,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,621 INFO L87 Difference]: Start difference. First operand 5532 states and 7990 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:39,708 INFO L93 Difference]: Finished difference Result 7148 states and 10254 transitions. [2023-12-20 13:40:39,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:39,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 13:40:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:39,712 INFO L225 Difference]: With dead ends: 7148 [2023-12-20 13:40:39,713 INFO L226 Difference]: Without dead ends: 3922 [2023-12-20 13:40:39,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,716 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:39,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-12-20 13:40:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2023-12-20 13:40:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3918 states have (on average 1.4553343542623787) internal successors, (5702), 3919 states have internal predecessors, (5702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5702 transitions. [2023-12-20 13:40:39,784 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5702 transitions. Word has length 78 [2023-12-20 13:40:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:39,784 INFO L495 AbstractCegarLoop]: Abstraction has 3920 states and 5702 transitions. [2023-12-20 13:40:39,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5702 transitions. [2023-12-20 13:40:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 13:40:39,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:39,785 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 13:40:39,785 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1884532647, now seen corresponding path program 1 times [2023-12-20 13:40:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391163362] [2023-12-20 13:40:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:39,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391163362] [2023-12-20 13:40:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391163362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:40:39,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:40:39,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:40:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200060951] [2023-12-20 13:40:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:40:39,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:40:39,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:40:39,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,863 INFO L87 Difference]: Start difference. First operand 3920 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:39,959 INFO L93 Difference]: Finished difference Result 4730 states and 6822 transitions. [2023-12-20 13:40:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:40:39,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 13:40:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:39,972 INFO L225 Difference]: With dead ends: 4730 [2023-12-20 13:40:39,973 INFO L226 Difference]: Without dead ends: 3116 [2023-12-20 13:40:39,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:40:39,977 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:39,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-12-20 13:40:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3114. [2023-12-20 13:40:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3112 states have (on average 1.4688303341902313) internal successors, (4571), 3113 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4571 transitions. [2023-12-20 13:40:40,030 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4571 transitions. Word has length 80 [2023-12-20 13:40:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4571 transitions. [2023-12-20 13:40:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4571 transitions. [2023-12-20 13:40:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 13:40:40,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:40,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:40,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 13:40:40,032 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:40,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 390177767, now seen corresponding path program 1 times [2023-12-20 13:40:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:40,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886604975] [2023-12-20 13:40:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:40:40,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886604975] [2023-12-20 13:40:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886604975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:40,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088892300] [2023-12-20 13:40:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:40,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:40,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:40,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:40,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:40:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:40,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 13:40:40,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:40:40,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:40:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088892300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:40,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:40,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-20 13:40:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62956849] [2023-12-20 13:40:40,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 13:40:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 13:40:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:40:40,735 INFO L87 Difference]: Start difference. First operand 3114 states and 4571 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:40,907 INFO L93 Difference]: Finished difference Result 5775 states and 8151 transitions. [2023-12-20 13:40:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:40:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 82 [2023-12-20 13:40:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:40,917 INFO L225 Difference]: With dead ends: 5775 [2023-12-20 13:40:40,917 INFO L226 Difference]: Without dead ends: 4967 [2023-12-20 13:40:40,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:40:40,919 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1715 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:40,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 4812 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:40:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2023-12-20 13:40:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4898. [2023-12-20 13:40:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4896 states have (on average 1.4009395424836601) internal successors, (6859), 4897 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 6859 transitions. [2023-12-20 13:40:41,056 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 6859 transitions. Word has length 82 [2023-12-20 13:40:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:41,056 INFO L495 AbstractCegarLoop]: Abstraction has 4898 states and 6859 transitions. [2023-12-20 13:40:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 6859 transitions. [2023-12-20 13:40:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:40:41,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:41,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:41,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:41,259 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,SelfDestructingSolverStorable22 [2023-12-20 13:40:41,259 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:41,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1286852559, now seen corresponding path program 1 times [2023-12-20 13:40:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:41,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525483371] [2023-12-20 13:40:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:42,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525483371] [2023-12-20 13:40:42,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525483371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:42,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748480469] [2023-12-20 13:40:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:42,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:42,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:40:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:42,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:40:42,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:42,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748480469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:44,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:44,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-20 13:40:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037259774] [2023-12-20 13:40:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:44,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:40:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:44,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:40:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:40:44,143 INFO L87 Difference]: Start difference. First operand 4898 states and 6859 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:47,311 INFO L93 Difference]: Finished difference Result 15921 states and 21015 transitions. [2023-12-20 13:40:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 13:40:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-12-20 13:40:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:47,324 INFO L225 Difference]: With dead ends: 15921 [2023-12-20 13:40:47,324 INFO L226 Difference]: Without dead ends: 13424 [2023-12-20 13:40:47,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:40:47,329 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 21217 mSDsluCounter, 9545 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21217 SdHoareTripleChecker+Valid, 11043 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:47,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21217 Valid, 11043 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 13:40:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2023-12-20 13:40:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 12574. [2023-12-20 13:40:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12574 states, 12572 states have (on average 1.3322462615335666) internal successors, (16749), 12573 states have internal predecessors, (16749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 16749 transitions. [2023-12-20 13:40:47,697 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 16749 transitions. Word has length 83 [2023-12-20 13:40:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:47,697 INFO L495 AbstractCegarLoop]: Abstraction has 12574 states and 16749 transitions. [2023-12-20 13:40:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 16749 transitions. [2023-12-20 13:40:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:40:47,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:47,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:47,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:47,904 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,SelfDestructingSolverStorable23 [2023-12-20 13:40:47,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:47,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash 337107919, now seen corresponding path program 1 times [2023-12-20 13:40:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032795561] [2023-12-20 13:40:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:47,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:48,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032795561] [2023-12-20 13:40:48,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032795561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:48,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927284386] [2023-12-20 13:40:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:48,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:48,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:48,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:48,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:40:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:48,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:40:48,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:49,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927284386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:49,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:49,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:40:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917584669] [2023-12-20 13:40:49,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:49,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:40:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:40:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:40:49,813 INFO L87 Difference]: Start difference. First operand 12574 states and 16749 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:50,683 INFO L93 Difference]: Finished difference Result 23542 states and 30822 transitions. [2023-12-20 13:40:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 13:40:50,683 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 13:40:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:50,696 INFO L225 Difference]: With dead ends: 23542 [2023-12-20 13:40:50,697 INFO L226 Difference]: Without dead ends: 13712 [2023-12-20 13:40:50,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:40:50,704 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 15272 mSDsluCounter, 6272 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15272 SdHoareTripleChecker+Valid, 7782 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:50,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15272 Valid, 7782 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:40:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13712 states. [2023-12-20 13:40:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 12352. [2023-12-20 13:40:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12352 states, 12350 states have (on average 1.3224291497975709) internal successors, (16332), 12351 states have internal predecessors, (16332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12352 states to 12352 states and 16332 transitions. [2023-12-20 13:40:51,157 INFO L78 Accepts]: Start accepts. Automaton has 12352 states and 16332 transitions. Word has length 83 [2023-12-20 13:40:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:51,158 INFO L495 AbstractCegarLoop]: Abstraction has 12352 states and 16332 transitions. [2023-12-20 13:40:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12352 states and 16332 transitions. [2023-12-20 13:40:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:40:51,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:51,159 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:51,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:51,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:51,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1141151537, now seen corresponding path program 1 times [2023-12-20 13:40:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:51,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406665360] [2023-12-20 13:40:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:51,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406665360] [2023-12-20 13:40:51,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406665360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137555992] [2023-12-20 13:40:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:51,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:51,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:40:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:51,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:40:51,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:52,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:53,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137555992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:53,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:40:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506559339] [2023-12-20 13:40:53,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:53,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:40:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:40:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:40:53,250 INFO L87 Difference]: Start difference. First operand 12352 states and 16332 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:54,478 INFO L93 Difference]: Finished difference Result 32895 states and 42594 transitions. [2023-12-20 13:40:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 13:40:54,480 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-20 13:40:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:54,504 INFO L225 Difference]: With dead ends: 32895 [2023-12-20 13:40:54,505 INFO L226 Difference]: Without dead ends: 24022 [2023-12-20 13:40:54,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:40:54,513 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 15147 mSDsluCounter, 6260 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15147 SdHoareTripleChecker+Valid, 7789 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:54,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15147 Valid, 7789 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:40:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24022 states. [2023-12-20 13:40:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24022 to 22682. [2023-12-20 13:40:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22682 states, 22680 states have (on average 1.290432098765432) internal successors, (29267), 22681 states have internal predecessors, (29267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22682 states to 22682 states and 29267 transitions. [2023-12-20 13:40:55,309 INFO L78 Accepts]: Start accepts. Automaton has 22682 states and 29267 transitions. Word has length 83 [2023-12-20 13:40:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:55,309 INFO L495 AbstractCegarLoop]: Abstraction has 22682 states and 29267 transitions. [2023-12-20 13:40:55,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:40:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22682 states and 29267 transitions. [2023-12-20 13:40:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 13:40:55,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:55,325 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:40:55,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:55,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 13:40:55,531 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:55,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash -97270267, now seen corresponding path program 1 times [2023-12-20 13:40:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509329603] [2023-12-20 13:40:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509329603] [2023-12-20 13:40:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509329603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236877028] [2023-12-20 13:40:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:56,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:56,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:40:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:56,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:40:56,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:57,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236877028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:57,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:57,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:40:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418169122] [2023-12-20 13:40:57,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:40:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:40:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:40:57,967 INFO L87 Difference]: Start difference. First operand 22682 states and 29267 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:41:01,655 INFO L93 Difference]: Finished difference Result 83144 states and 105423 transitions. [2023-12-20 13:41:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 13:41:01,655 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 84 [2023-12-20 13:41:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:41:01,729 INFO L225 Difference]: With dead ends: 83144 [2023-12-20 13:41:01,729 INFO L226 Difference]: Without dead ends: 63433 [2023-12-20 13:41:01,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:41:01,769 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 17316 mSDsluCounter, 8027 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17316 SdHoareTripleChecker+Valid, 9537 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:41:01,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17316 Valid, 9537 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:41:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63433 states. [2023-12-20 13:41:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63433 to 60121. [2023-12-20 13:41:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60121 states, 60119 states have (on average 1.252748715048487) internal successors, (75314), 60120 states have internal predecessors, (75314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60121 states to 60121 states and 75314 transitions. [2023-12-20 13:41:04,655 INFO L78 Accepts]: Start accepts. Automaton has 60121 states and 75314 transitions. Word has length 84 [2023-12-20 13:41:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:41:04,655 INFO L495 AbstractCegarLoop]: Abstraction has 60121 states and 75314 transitions. [2023-12-20 13:41:04,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 60121 states and 75314 transitions. [2023-12-20 13:41:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:41:04,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:41:04,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:41:04,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:41:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:41:04,861 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:41:04,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:41:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash -237028743, now seen corresponding path program 1 times [2023-12-20 13:41:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:41:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011640375] [2023-12-20 13:41:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:04,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:41:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:41:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011640375] [2023-12-20 13:41:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011640375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:41:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697201507] [2023-12-20 13:41:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:41:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:41:07,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:41:07,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:41:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:07,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:41:07,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:41:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:08,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:41:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:09,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697201507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:41:09,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:41:09,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-20 13:41:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201508188] [2023-12-20 13:41:09,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:41:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 13:41:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:41:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 13:41:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 13:41:09,717 INFO L87 Difference]: Start difference. First operand 60121 states and 75314 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:41:49,578 INFO L93 Difference]: Finished difference Result 108092 states and 133572 transitions. [2023-12-20 13:41:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2023-12-20 13:41:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 13:41:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:41:49,667 INFO L225 Difference]: With dead ends: 108092 [2023-12-20 13:41:49,668 INFO L226 Difference]: Without dead ends: 89427 [2023-12-20 13:41:49,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31524 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=12603, Invalid=67769, Unknown=0, NotChecked=0, Total=80372 [2023-12-20 13:41:49,696 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 27561 mSDsluCounter, 30850 mSDsCounter, 0 mSdLazyCounter, 8976 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27561 SdHoareTripleChecker+Valid, 32563 SdHoareTripleChecker+Invalid, 9170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 8976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:41:49,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27561 Valid, 32563 Invalid, 9170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [194 Valid, 8976 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 13:41:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89427 states. [2023-12-20 13:41:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89427 to 58873. [2023-12-20 13:41:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58873 states, 58871 states have (on average 1.249851369944455) internal successors, (73580), 58872 states have internal predecessors, (73580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58873 states to 58873 states and 73580 transitions. [2023-12-20 13:41:52,061 INFO L78 Accepts]: Start accepts. Automaton has 58873 states and 73580 transitions. Word has length 86 [2023-12-20 13:41:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:41:52,061 INFO L495 AbstractCegarLoop]: Abstraction has 58873 states and 73580 transitions. [2023-12-20 13:41:52,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:41:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 58873 states and 73580 transitions. [2023-12-20 13:41:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:41:52,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:41:52,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:41:52,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:41:52,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:41:52,270 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:41:52,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:41:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1624167431, now seen corresponding path program 1 times [2023-12-20 13:41:52,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:41:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268600402] [2023-12-20 13:41:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:41:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:41:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268600402] [2023-12-20 13:41:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268600402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:41:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122991041] [2023-12-20 13:41:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:52,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:41:52,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:41:52,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:41:52,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:41:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:52,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 13:41:52,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:41:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:56,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:41:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122991041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:41:58,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:41:58,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-12-20 13:41:58,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283437478] [2023-12-20 13:41:58,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:41:58,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:41:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:41:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:41:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:41:58,598 INFO L87 Difference]: Start difference. First operand 58873 states and 73580 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:43:18,073 INFO L93 Difference]: Finished difference Result 301265 states and 374586 transitions. [2023-12-20 13:43:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-12-20 13:43:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 86 [2023-12-20 13:43:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:43:18,536 INFO L225 Difference]: With dead ends: 301265 [2023-12-20 13:43:18,536 INFO L226 Difference]: Without dead ends: 271990 [2023-12-20 13:43:18,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-12-20 13:43:18,582 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 21263 mSDsluCounter, 24251 mSDsCounter, 0 mSdLazyCounter, 5599 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21263 SdHoareTripleChecker+Valid, 25835 SdHoareTripleChecker+Invalid, 5745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:43:18,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21263 Valid, 25835 Invalid, 5745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 5599 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 13:43:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271990 states. [2023-12-20 13:43:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271990 to 57424. [2023-12-20 13:43:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57424 states, 57422 states have (on average 1.249294695412908) internal successors, (71737), 57423 states have internal predecessors, (71737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57424 states to 57424 states and 71737 transitions. [2023-12-20 13:43:22,988 INFO L78 Accepts]: Start accepts. Automaton has 57424 states and 71737 transitions. Word has length 86 [2023-12-20 13:43:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:43:22,989 INFO L495 AbstractCegarLoop]: Abstraction has 57424 states and 71737 transitions. [2023-12-20 13:43:22,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 57424 states and 71737 transitions. [2023-12-20 13:43:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 13:43:22,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:43:22,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:43:23,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 13:43:23,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:43:23,196 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:43:23,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:43:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -99844201, now seen corresponding path program 1 times [2023-12-20 13:43:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:43:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605464368] [2023-12-20 13:43:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:43:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:43:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:43:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:43:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605464368] [2023-12-20 13:43:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605464368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:43:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863236421] [2023-12-20 13:43:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:43:23,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:43:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:43:23,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:43:23,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:43:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:43:23,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:43:23,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:43:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:24,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:43:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863236421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:43:25,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:43:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-12-20 13:43:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968987409] [2023-12-20 13:43:25,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:43:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 13:43:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:43:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 13:43:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 13:43:25,856 INFO L87 Difference]: Start difference. First operand 57424 states and 71737 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:43:34,825 INFO L93 Difference]: Finished difference Result 110370 states and 137231 transitions. [2023-12-20 13:43:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 13:43:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-20 13:43:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:43:34,906 INFO L225 Difference]: With dead ends: 110370 [2023-12-20 13:43:34,907 INFO L226 Difference]: Without dead ends: 77857 [2023-12-20 13:43:34,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-12-20 13:43:34,926 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 13756 mSDsluCounter, 19876 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13756 SdHoareTripleChecker+Valid, 21410 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:43:34,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13756 Valid, 21410 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 13:43:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77857 states. [2023-12-20 13:43:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77857 to 74620. [2023-12-20 13:43:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74620 states, 74618 states have (on average 1.2399957114905251) internal successors, (92526), 74619 states have internal predecessors, (92526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74620 states to 74620 states and 92526 transitions. [2023-12-20 13:43:39,765 INFO L78 Accepts]: Start accepts. Automaton has 74620 states and 92526 transitions. Word has length 87 [2023-12-20 13:43:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:43:39,765 INFO L495 AbstractCegarLoop]: Abstraction has 74620 states and 92526 transitions. [2023-12-20 13:43:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 74620 states and 92526 transitions. [2023-12-20 13:43:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 13:43:39,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:43:39,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 13:43:39,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 13:43:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:43:39,983 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:43:39,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:43:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash 997631972, now seen corresponding path program 1 times [2023-12-20 13:43:39,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:43:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089121204] [2023-12-20 13:43:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:43:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:43:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:43:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:43:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089121204] [2023-12-20 13:43:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089121204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:43:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:43:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:43:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778170641] [2023-12-20 13:43:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:43:40,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:43:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:43:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:43:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:43:40,128 INFO L87 Difference]: Start difference. First operand 74620 states and 92526 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:43:47,640 INFO L93 Difference]: Finished difference Result 78414 states and 98631 transitions. [2023-12-20 13:43:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:43:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-20 13:43:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:43:47,721 INFO L225 Difference]: With dead ends: 78414 [2023-12-20 13:43:47,722 INFO L226 Difference]: Without dead ends: 76122 [2023-12-20 13:43:47,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:43:47,732 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 789 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:43:47,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 908 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 13:43:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76122 states. [2023-12-20 13:43:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76122 to 76122. [2023-12-20 13:43:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76122 states, 76120 states have (on average 1.2363504992117709) internal successors, (94111), 76121 states have internal predecessors, (94111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76122 states to 76122 states and 94111 transitions. [2023-12-20 13:43:51,960 INFO L78 Accepts]: Start accepts. Automaton has 76122 states and 94111 transitions. Word has length 130 [2023-12-20 13:43:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:43:51,960 INFO L495 AbstractCegarLoop]: Abstraction has 76122 states and 94111 transitions. [2023-12-20 13:43:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:43:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 76122 states and 94111 transitions. [2023-12-20 13:43:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 13:43:51,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:43:51,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:43:51,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 13:43:51,968 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:43:51,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:43:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash -454102671, now seen corresponding path program 1 times [2023-12-20 13:43:51,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:43:51,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236812269] [2023-12-20 13:43:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:43:51,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:43:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:43:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:52,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:43:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236812269] [2023-12-20 13:43:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236812269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:43:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069864639] [2023-12-20 13:43:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:43:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:43:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:43:52,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:43:52,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:43:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:43:52,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:43:52,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:43:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 32 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:53,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:43:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:43:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069864639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:43:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:43:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-20 13:43:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475766178] [2023-12-20 13:43:55,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:43:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:43:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:43:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:43:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:43:55,404 INFO L87 Difference]: Start difference. First operand 76122 states and 94111 transitions. Second operand has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:44:01,227 INFO L93 Difference]: Finished difference Result 120253 states and 148941 transitions. [2023-12-20 13:44:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 13:44:01,227 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-20 13:44:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:44:01,316 INFO L225 Difference]: With dead ends: 120253 [2023-12-20 13:44:01,317 INFO L226 Difference]: Without dead ends: 85324 [2023-12-20 13:44:01,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1080, Invalid=3750, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 13:44:01,342 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 16778 mSDsluCounter, 12303 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16778 SdHoareTripleChecker+Valid, 13833 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:44:01,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16778 Valid, 13833 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:44:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85324 states. [2023-12-20 13:44:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85324 to 76122. [2023-12-20 13:44:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76122 states, 76120 states have (on average 1.2285470310036783) internal successors, (93517), 76121 states have internal predecessors, (93517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76122 states to 76122 states and 93517 transitions. [2023-12-20 13:44:05,845 INFO L78 Accepts]: Start accepts. Automaton has 76122 states and 93517 transitions. Word has length 134 [2023-12-20 13:44:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:44:05,846 INFO L495 AbstractCegarLoop]: Abstraction has 76122 states and 93517 transitions. [2023-12-20 13:44:05,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.34375) internal successors, (331), 31 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 76122 states and 93517 transitions. [2023-12-20 13:44:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 13:44:05,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:44:05,855 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:44:05,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 13:44:06,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:44:06,056 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:44:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:44:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash 572735089, now seen corresponding path program 1 times [2023-12-20 13:44:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:44:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152565275] [2023-12-20 13:44:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:44:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:44:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:44:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:44:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152565275] [2023-12-20 13:44:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152565275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:44:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159499454] [2023-12-20 13:44:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:44:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:44:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:44:06,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:44:06,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:44:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:44:07,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:44:07,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:44:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:07,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:44:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 39 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159499454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:44:10,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:44:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 13:44:10,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794447718] [2023-12-20 13:44:10,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:44:10,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 13:44:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:44:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 13:44:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 13:44:10,172 INFO L87 Difference]: Start difference. First operand 76122 states and 93517 transitions. Second operand has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:44:26,268 INFO L93 Difference]: Finished difference Result 175435 states and 214616 transitions. [2023-12-20 13:44:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-20 13:44:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-20 13:44:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:44:26,396 INFO L225 Difference]: With dead ends: 175435 [2023-12-20 13:44:26,396 INFO L226 Difference]: Without dead ends: 118065 [2023-12-20 13:44:26,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9386 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4305, Invalid=24425, Unknown=0, NotChecked=0, Total=28730 [2023-12-20 13:44:26,418 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 25764 mSDsluCounter, 15833 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25764 SdHoareTripleChecker+Valid, 17353 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:44:26,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25764 Valid, 17353 Invalid, 2504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 13:44:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118065 states. [2023-12-20 13:44:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118065 to 97426. [2023-12-20 13:44:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97426 states, 97424 states have (on average 1.2165688126129086) internal successors, (118523), 97425 states have internal predecessors, (118523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97426 states to 97426 states and 118523 transitions. [2023-12-20 13:44:32,375 INFO L78 Accepts]: Start accepts. Automaton has 97426 states and 118523 transitions. Word has length 134 [2023-12-20 13:44:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:44:32,376 INFO L495 AbstractCegarLoop]: Abstraction has 97426 states and 118523 transitions. [2023-12-20 13:44:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 35 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:44:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 97426 states and 118523 transitions. [2023-12-20 13:44:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 13:44:32,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:44:32,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:44:32,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:44:32,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 13:44:32,584 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:44:32,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:44:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1283572801, now seen corresponding path program 1 times [2023-12-20 13:44:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:44:32,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256597504] [2023-12-20 13:44:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:44:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:44:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:44:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:44:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256597504] [2023-12-20 13:44:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256597504] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:44:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928830157] [2023-12-20 13:44:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:44:33,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:44:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:44:33,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:44:33,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:44:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:44:33,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:44:33,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:44:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:34,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:44:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:44:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928830157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:44:37,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:44:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 19] total 48 [2023-12-20 13:44:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051696421] [2023-12-20 13:44:37,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:44:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-20 13:44:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:44:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-20 13:44:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 13:44:37,736 INFO L87 Difference]: Start difference. First operand 97426 states and 118523 transitions. Second operand has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:05,553 INFO L93 Difference]: Finished difference Result 203794 states and 249009 transitions. [2023-12-20 13:45:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-20 13:45:05,554 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 13:45:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:05,713 INFO L225 Difference]: With dead ends: 203794 [2023-12-20 13:45:05,713 INFO L226 Difference]: Without dead ends: 162262 [2023-12-20 13:45:05,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12059 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=5331, Invalid=32499, Unknown=0, NotChecked=0, Total=37830 [2023-12-20 13:45:05,743 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 26982 mSDsluCounter, 29650 mSDsCounter, 0 mSdLazyCounter, 3648 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26982 SdHoareTripleChecker+Valid, 31216 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:05,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26982 Valid, 31216 Invalid, 3802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 3648 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 13:45:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162262 states. [2023-12-20 13:45:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162262 to 116405. [2023-12-20 13:45:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116405 states, 116403 states have (on average 1.2043933575595132) internal successors, (140195), 116404 states have internal predecessors, (140195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116405 states to 116405 states and 140195 transitions. [2023-12-20 13:45:14,105 INFO L78 Accepts]: Start accepts. Automaton has 116405 states and 140195 transitions. Word has length 136 [2023-12-20 13:45:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:14,105 INFO L495 AbstractCegarLoop]: Abstraction has 116405 states and 140195 transitions. [2023-12-20 13:45:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.916666666666667) internal successors, (380), 48 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 116405 states and 140195 transitions. [2023-12-20 13:45:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:45:14,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:14,114 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:14,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 13:45:14,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 13:45:14,315 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:14,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1463011315, now seen corresponding path program 1 times [2023-12-20 13:45:14,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:14,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555792602] [2023-12-20 13:45:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:14,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:17,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:17,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555792602] [2023-12-20 13:45:17,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555792602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:45:17,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858707920] [2023-12-20 13:45:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:45:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:45:17,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:45:17,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:45:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:17,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 13:45:17,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:45:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:19,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:45:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858707920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:45:23,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:45:23,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 20, 19] total 68 [2023-12-20 13:45:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595771630] [2023-12-20 13:45:23,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:45:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 13:45:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 13:45:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4302, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 13:45:23,029 INFO L87 Difference]: Start difference. First operand 116405 states and 140195 transitions. Second operand has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:52:48,597 INFO L93 Difference]: Finished difference Result 426860 states and 510029 transitions. [2023-12-20 13:52:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1027 states. [2023-12-20 13:52:48,597 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-20 13:52:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:52:49,272 INFO L225 Difference]: With dead ends: 426860 [2023-12-20 13:52:49,272 INFO L226 Difference]: Without dead ends: 369887 [2023-12-20 13:52:49,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591065 ImplicationChecksByTransitivity, 385.1s TimeCoverageRelationStatistics Valid=123820, Invalid=1067552, Unknown=0, NotChecked=0, Total=1191372 [2023-12-20 13:52:49,404 INFO L413 NwaCegarLoop]: 1869 mSDtfsCounter, 40169 mSDsluCounter, 54630 mSDsCounter, 0 mSdLazyCounter, 28586 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40169 SdHoareTripleChecker+Valid, 56499 SdHoareTripleChecker+Invalid, 29184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 28586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:52:49,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40169 Valid, 56499 Invalid, 29184 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [598 Valid, 28586 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time] [2023-12-20 13:52:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369887 states. [2023-12-20 13:53:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369887 to 136127. [2023-12-20 13:53:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136127 states, 136125 states have (on average 1.192315886134068) internal successors, (162304), 136126 states have internal predecessors, (162304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136127 states to 136127 states and 162304 transitions. [2023-12-20 13:53:03,704 INFO L78 Accepts]: Start accepts. Automaton has 136127 states and 162304 transitions. Word has length 137 [2023-12-20 13:53:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:53:03,705 INFO L495 AbstractCegarLoop]: Abstraction has 136127 states and 162304 transitions. [2023-12-20 13:53:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.764705882352941) internal successors, (392), 68 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:53:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 136127 states and 162304 transitions. [2023-12-20 13:53:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:53:03,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:53:03,714 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:53:03,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 13:53:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 13:53:03,914 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:53:03,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:53:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 498594107, now seen corresponding path program 1 times [2023-12-20 13:53:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:53:03,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946835140] [2023-12-20 13:53:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:53:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:53:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946835140] [2023-12-20 13:53:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946835140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:53:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43225750] [2023-12-20 13:53:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:53:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:53:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:53:05,475 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:53:05,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:53:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:53:05,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:53:05,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:53:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:06,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:53:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:53:09,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43225750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:53:09,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:53:09,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 57 [2023-12-20 13:53:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575909532] [2023-12-20 13:53:09,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:53:09,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 13:53:09,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:53:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 13:53:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 13:53:09,527 INFO L87 Difference]: Start difference. First operand 136127 states and 162304 transitions. Second operand has 57 states, 57 states have (on average 6.2631578947368425) internal successors, (357), 57 states have internal predecessors, (357), 0 states have call successors, (0), 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... [2023-12-20 13:53:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-20 13:53:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10736 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=5274, Invalid=31016, Unknown=0, NotChecked=0, Total=36290 [2023-12-20 13:53:36,859 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 7550 mSDsluCounter, 6323 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7550 SdHoareTripleChecker+Valid, 6622 SdHoareTripleChecker+Invalid, 4293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:53:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7550 Valid, 6622 Invalid, 4293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 3959 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 13:53:36,860 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:53:36,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 13:53:36,872 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 [2023-12-20 13:53:36,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:53:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 13:53:37,066 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (136127states) and FLOYD_HOARE automaton (currently 136 states, 57 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-23-3-3-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-17-2-2-1 context. [2023-12-20 13:53:37,068 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:53:37,072 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:53:37,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:53:37,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:53:37 BoogieIcfgContainer [2023-12-20 13:53:37,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:53:37,077 INFO L158 Benchmark]: Toolchain (without parser) took 802991.72ms. Allocated memory was 200.3MB in the beginning and 6.4GB in the end (delta: 6.2GB). Free memory was 124.2MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 13:53:37,077 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:53:37,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1542.76ms. Allocated memory was 200.3MB in the beginning and 292.6MB in the end (delta: 92.3MB). Free memory was 124.2MB in the beginning and 95.8MB in the end (delta: 28.4MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. [2023-12-20 13:53:37,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 317.45ms. Allocated memory is still 292.6MB. Free memory was 95.8MB in the beginning and 175.0MB in the end (delta: -79.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-20 13:53:37,078 INFO L158 Benchmark]: Boogie Preprocessor took 520.02ms. Allocated memory is still 292.6MB. Free memory was 175.0MB in the beginning and 185.3MB in the end (delta: -10.3MB). Peak memory consumption was 155.3MB. Max. memory is 8.0GB. [2023-12-20 13:53:37,078 INFO L158 Benchmark]: RCFGBuilder took 4099.65ms. Allocated memory was 292.6MB in the beginning and 687.9MB in the end (delta: 395.3MB). Free memory was 185.3MB in the beginning and 515.4MB in the end (delta: -330.1MB). Peak memory consumption was 201.6MB. Max. memory is 8.0GB. [2023-12-20 13:53:37,078 INFO L158 Benchmark]: TraceAbstraction took 796503.62ms. Allocated memory was 687.9MB in the beginning and 6.4GB in the end (delta: 5.7GB). Free memory was 514.9MB in the beginning and 4.0GB in the end (delta: -3.5GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-20 13:53:37,079 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1542.76ms. Allocated memory was 200.3MB in the beginning and 292.6MB in the end (delta: 92.3MB). Free memory was 124.2MB in the beginning and 95.8MB in the end (delta: 28.4MB). Peak memory consumption was 121.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 317.45ms. Allocated memory is still 292.6MB. Free memory was 95.8MB in the beginning and 175.0MB in the end (delta: -79.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 520.02ms. Allocated memory is still 292.6MB. Free memory was 175.0MB in the beginning and 185.3MB in the end (delta: -10.3MB). Peak memory consumption was 155.3MB. Max. memory is 8.0GB. * RCFGBuilder took 4099.65ms. Allocated memory was 292.6MB in the beginning and 687.9MB in the end (delta: 395.3MB). Free memory was 185.3MB in the beginning and 515.4MB in the end (delta: -330.1MB). Peak memory consumption was 201.6MB. Max. memory is 8.0GB. * TraceAbstraction took 796503.62ms. Allocated memory was 687.9MB in the beginning and 6.4GB in the end (delta: 5.7GB). Free memory was 514.9MB in the beginning and 4.0GB in the end (delta: -3.5GB). Peak memory consumption was 2.2GB. 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: 435]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 435). Cancelled while NwaCegarLoop was constructing difference of abstraction (136127states) and FLOYD_HOARE automaton (currently 136 states, 57 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-23-3-3-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-17-2-2-1 context. - TimeoutResultAtElement [Line: 630]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 630). Cancelled while NwaCegarLoop was constructing difference of abstraction (136127states) and FLOYD_HOARE automaton (currently 136 states, 57 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-23-3-3-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-17-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 796.4s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 681.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 309828 SdHoareTripleChecker+Valid, 61.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 309828 mSDsluCounter, 306479 SdHoareTripleChecker+Invalid, 54.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 252725 mSDsCounter, 3736 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68932 IncrementalHoareTripleChecker+Invalid, 72668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3736 mSolverCounterUnsat, 53754 mSDtfsCounter, 68932 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5195 GetRequests, 2459 SyntacticMatches, 1 SemanticMatches, 2734 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714053 ImplicationChecksByTransitivity, 546.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136127occurred in iteration=35, InterpolantAutomatonStates: 2176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 58.0s AutomataMinimizationTime, 35 MinimizatonAttempts, 604885 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 50.5s InterpolantComputationTime, 4169 NumberOfCodeBlocks, 4169 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5459 ConstructedInterpolants, 0 QuantifiedInterpolants, 98859 SizeOfPredicates, 98 NumberOfNonLiveVariables, 6422 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 62 InterpolantComputations, 23 PerfectInterpolantSequences, 902/2192 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