/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:42:55,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:42:55,859 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 02:42:55,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:42:55,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:42:55,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:42:55,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:42:55,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:42:55,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:42:55,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:42:55,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:42:55,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:42:55,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:42:55,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:42:55,891 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:42:55,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:42:55,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:42:55,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:42:55,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:42:55,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:42:55,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:42:55,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:42:55,894 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:42:55,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:42:55,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:42:55,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:42:55,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:42:55,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:42:55,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:42:55,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:42:55,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:42:55,897 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:42:56,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:42:56,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:42:56,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:42:56,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:42:56,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:42:56,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:42:57,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:42:57,247 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:42:57,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:42:57,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934a23a21/62bed984312a4516be32c611571edba1/FLAG434b2d25a [2023-12-20 02:42:57,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934a23a21/62bed984312a4516be32c611571edba1 [2023-12-20 02:42:57,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:42:57,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:42:57,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:42:57,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:42:57,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:42:57,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab4359d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57, skipping insertion in model container [2023-12-20 02:42:57,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:42:57,412 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2023-12-20 02:42:57,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:42:57,437 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:42:57,456 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4371,4384] [2023-12-20 02:42:57,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:42:57,476 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:42:57,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57 WrapperNode [2023-12-20 02:42:57,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:42:57,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:42:57,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:42:57,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:42:57,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,518 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 360 [2023-12-20 02:42:57,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:42:57,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:42:57,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:42:57,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:42:57,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,539 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 02:42:57,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:42:57,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:42:57,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:42:57,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:42:57,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (1/1) ... [2023-12-20 02:42:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:42:57,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:42:57,613 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 02:42:57,638 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 02:42:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:42:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:42:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:42:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:42:57,784 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:42:57,785 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:42:58,148 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:42:58,178 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:42:58,178 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:42:58,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:42:58 BoogieIcfgContainer [2023-12-20 02:42:58,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:42:58,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:42:58,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:42:58,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:42:58,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:42:57" (1/3) ... [2023-12-20 02:42:58,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2147cf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:42:58, skipping insertion in model container [2023-12-20 02:42:58,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:57" (2/3) ... [2023-12-20 02:42:58,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2147cf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:42:58, skipping insertion in model container [2023-12-20 02:42:58,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:42:58" (3/3) ... [2023-12-20 02:42:58,185 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 02:42:58,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:42:58,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:42:58,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:42:58,246 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;@caa245, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:42:58,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:42:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 82 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 02:42:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 02:42:58,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:58,261 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] [2023-12-20 02:42:58,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:58,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1085213270, now seen corresponding path program 1 times [2023-12-20 02:42:58,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:58,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043534159] [2023-12-20 02:42:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:58,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:58,498 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 02:42:58,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:58,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043534159] [2023-12-20 02:42:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043534159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:58,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:58,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:42:58,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809664909] [2023-12-20 02:42:58,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:42:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:42:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:42:58,526 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 82 states have internal predecessors, (138), 0 states have call successors, (0), 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 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 02:42:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:58,562 INFO L93 Difference]: Finished difference Result 195 states and 314 transitions. [2023-12-20 02:42:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:42:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 02:42:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:58,570 INFO L225 Difference]: With dead ends: 195 [2023-12-20 02:42:58,570 INFO L226 Difference]: Without dead ends: 127 [2023-12-20 02:42:58,572 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 02:42:58,575 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 100 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 292 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 02:42:58,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-20 02:42:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-12-20 02:42:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.5080645161290323) internal successors, (187), 124 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:42:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 187 transitions. [2023-12-20 02:42:58,610 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 187 transitions. Word has length 36 [2023-12-20 02:42:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 187 transitions. [2023-12-20 02:42:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 02:42:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 187 transitions. [2023-12-20 02:42:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 02:42:58,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:58,614 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] [2023-12-20 02:42:58,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:42:58,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:58,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1921613256, now seen corresponding path program 1 times [2023-12-20 02:42:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558232788] [2023-12-20 02:42:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:58,739 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 02:42:58,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:58,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558232788] [2023-12-20 02:42:58,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558232788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:58,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:58,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:42:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973079185] [2023-12-20 02:42:58,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:58,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:42:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:42:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:42:58,742 INFO L87 Difference]: Start difference. First operand 125 states and 187 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 02:42:58,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:58,773 INFO L93 Difference]: Finished difference Result 305 states and 471 transitions. [2023-12-20 02:42:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:42:58,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-20 02:42:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:58,787 INFO L225 Difference]: With dead ends: 305 [2023-12-20 02:42:58,787 INFO L226 Difference]: Without dead ends: 199 [2023-12-20 02:42:58,787 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 02:42:58,788 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:58,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 252 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-20 02:42:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2023-12-20 02:42:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 02:42:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 300 transitions. [2023-12-20 02:42:58,805 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 300 transitions. Word has length 37 [2023-12-20 02:42:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:58,806 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 300 transitions. [2023-12-20 02:42:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 02:42:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 300 transitions. [2023-12-20 02:42:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 02:42:58,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:58,807 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] [2023-12-20 02:42:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:42:58,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:58,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1122057593, now seen corresponding path program 1 times [2023-12-20 02:42:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870331976] [2023-12-20 02:42:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:58,909 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 02:42:58,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870331976] [2023-12-20 02:42:58,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870331976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:58,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:58,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:42:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913331692] [2023-12-20 02:42:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:42:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:42:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:42:58,916 INFO L87 Difference]: Start difference. First operand 197 states and 300 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 02:42:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:58,944 INFO L93 Difference]: Finished difference Result 489 states and 758 transitions. [2023-12-20 02:42:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:42:58,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 02:42:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:58,949 INFO L225 Difference]: With dead ends: 489 [2023-12-20 02:42:58,949 INFO L226 Difference]: Without dead ends: 311 [2023-12-20 02:42:58,950 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 02:42:58,951 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:58,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-20 02:42:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2023-12-20 02:42:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5324675324675325) internal successors, (472), 308 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 02:42:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 472 transitions. [2023-12-20 02:42:58,978 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 472 transitions. Word has length 38 [2023-12-20 02:42:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:58,978 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 472 transitions. [2023-12-20 02:42:58,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 02:42:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 472 transitions. [2023-12-20 02:42:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 02:42:58,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:58,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:42:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:42:58,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:58,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -664411233, now seen corresponding path program 1 times [2023-12-20 02:42:58,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:58,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852596217] [2023-12-20 02:42:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:59,122 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 02:42:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852596217] [2023-12-20 02:42:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852596217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:59,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:59,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:42:59,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88725527] [2023-12-20 02:42:59,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:59,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:42:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:42:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:42:59,126 INFO L87 Difference]: Start difference. First operand 309 states and 472 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 02:42:59,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:59,184 INFO L93 Difference]: Finished difference Result 1469 states and 2284 transitions. [2023-12-20 02:42:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:42:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-12-20 02:42:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:59,188 INFO L225 Difference]: With dead ends: 1469 [2023-12-20 02:42:59,188 INFO L226 Difference]: Without dead ends: 1179 [2023-12-20 02:42:59,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:42:59,190 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 486 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:59,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 658 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-12-20 02:42:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 597. [2023-12-20 02:42:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.523489932885906) internal successors, (908), 596 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 02:42:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 908 transitions. [2023-12-20 02:42:59,210 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 908 transitions. Word has length 39 [2023-12-20 02:42:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:59,210 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 908 transitions. [2023-12-20 02:42:59,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 02:42:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 908 transitions. [2023-12-20 02:42:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 02:42:59,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:59,211 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] [2023-12-20 02:42:59,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:42:59,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:59,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 858631940, now seen corresponding path program 1 times [2023-12-20 02:42:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685930257] [2023-12-20 02:42:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:59,350 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 02:42:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685930257] [2023-12-20 02:42:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685930257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:42:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829479604] [2023-12-20 02:42:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:42:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:42:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:42:59,354 INFO L87 Difference]: Start difference. First operand 597 states and 908 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 02:42:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:59,398 INFO L93 Difference]: Finished difference Result 2067 states and 3143 transitions. [2023-12-20 02:42:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:42:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 02:42:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:59,404 INFO L225 Difference]: With dead ends: 2067 [2023-12-20 02:42:59,404 INFO L226 Difference]: Without dead ends: 1489 [2023-12-20 02:42:59,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:42:59,409 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 279 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 361 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-12-20 02:42:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1485. [2023-12-20 02:42:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 1.5067385444743935) internal successors, (2236), 1484 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states 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 02:42:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2236 transitions. [2023-12-20 02:42:59,438 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2236 transitions. Word has length 40 [2023-12-20 02:42:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:59,438 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 2236 transitions. [2023-12-20 02:42:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 02:42:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2236 transitions. [2023-12-20 02:42:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 02:42:59,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:59,444 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] [2023-12-20 02:42:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:42:59,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:59,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1083564261, now seen corresponding path program 1 times [2023-12-20 02:42:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:59,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387328434] [2023-12-20 02:42:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:59,511 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 02:42:59,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387328434] [2023-12-20 02:42:59,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387328434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:59,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:59,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:42:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058797776] [2023-12-20 02:42:59,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:42:59,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:42:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:42:59,513 INFO L87 Difference]: Start difference. First operand 1485 states and 2236 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 02:42:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:59,625 INFO L93 Difference]: Finished difference Result 4417 states and 6670 transitions. [2023-12-20 02:42:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:42:59,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 02:42:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:59,633 INFO L225 Difference]: With dead ends: 4417 [2023-12-20 02:42:59,633 INFO L226 Difference]: Without dead ends: 2951 [2023-12-20 02:42:59,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:42:59,638 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:59,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 137 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:42:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2023-12-20 02:42:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2023-12-20 02:42:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.4993215739484396) internal successors, (4420), 2948 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states 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 02:42:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4420 transitions. [2023-12-20 02:42:59,690 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4420 transitions. Word has length 42 [2023-12-20 02:42:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:59,691 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4420 transitions. [2023-12-20 02:42:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 02:42:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4420 transitions. [2023-12-20 02:42:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 02:42:59,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:59,693 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] [2023-12-20 02:42:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:42:59,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:59,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 542600406, now seen corresponding path program 1 times [2023-12-20 02:42:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809784665] [2023-12-20 02:42:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:59,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:42:59,847 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 02:42:59,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:42:59,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809784665] [2023-12-20 02:42:59,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809784665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:42:59,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:42:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:42:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725097732] [2023-12-20 02:42:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:42:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:42:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:42:59,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:42:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:42:59,850 INFO L87 Difference]: Start difference. First operand 2949 states and 4420 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 02:42:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:42:59,894 INFO L93 Difference]: Finished difference Result 6071 states and 9013 transitions. [2023-12-20 02:42:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:42:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 02:42:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:42:59,907 INFO L225 Difference]: With dead ends: 6071 [2023-12-20 02:42:59,907 INFO L226 Difference]: Without dead ends: 6069 [2023-12-20 02:42:59,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:42:59,911 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 184 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:42:59,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 566 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:42:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6069 states. [2023-12-20 02:42:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6069 to 3141. [2023-12-20 02:42:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.4687898089171973) internal successors, (4612), 3140 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states 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 02:42:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4612 transitions. [2023-12-20 02:42:59,980 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4612 transitions. Word has length 42 [2023-12-20 02:42:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:42:59,980 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4612 transitions. [2023-12-20 02:42:59,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 02:42:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4612 transitions. [2023-12-20 02:42:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 02:42:59,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:42:59,982 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] [2023-12-20 02:42:59,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:42:59,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:42:59,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:42:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -348683587, now seen corresponding path program 1 times [2023-12-20 02:42:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:42:59,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827446436] [2023-12-20 02:42:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:42:59,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:42:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:00,045 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 02:43:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827446436] [2023-12-20 02:43:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827446436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:00,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:43:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841525305] [2023-12-20 02:43:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:00,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:43:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:43:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:43:00,047 INFO L87 Difference]: Start difference. First operand 3141 states and 4612 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 02:43:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:00,071 INFO L93 Difference]: Finished difference Result 7603 states and 11170 transitions. [2023-12-20 02:43:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:43:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 02:43:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:00,082 INFO L225 Difference]: With dead ends: 7603 [2023-12-20 02:43:00,082 INFO L226 Difference]: Without dead ends: 4481 [2023-12-20 02:43:00,085 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 02:43:00,086 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:00,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 234 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2023-12-20 02:43:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4479. [2023-12-20 02:43:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 4478 states have (on average 1.4595801697186244) internal successors, (6536), 4478 states have internal predecessors, (6536), 0 states have call successors, (0), 0 states 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 02:43:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6536 transitions. [2023-12-20 02:43:00,146 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6536 transitions. Word has length 43 [2023-12-20 02:43:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:00,146 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6536 transitions. [2023-12-20 02:43:00,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 02:43:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6536 transitions. [2023-12-20 02:43:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 02:43:00,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:00,148 INFO L195 NwaCegarLoop]: trace histogram [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 02:43:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:43:00,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:00,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1611610844, now seen corresponding path program 1 times [2023-12-20 02:43:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:00,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835275868] [2023-12-20 02:43:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:43:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835275868] [2023-12-20 02:43:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835275868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:43:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701843124] [2023-12-20 02:43:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:00,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:00,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:43:00,284 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 02:43:00,285 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 02:43:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:00,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 02:43:00,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:43:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:43:00,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:43:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:43:00,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701843124] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:43:00,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:43:00,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 11 [2023-12-20 02:43:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428031188] [2023-12-20 02:43:00,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:43:00,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 02:43:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 02:43:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-20 02:43:00,686 INFO L87 Difference]: Start difference. First operand 4479 states and 6536 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 02:43:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:00,791 INFO L93 Difference]: Finished difference Result 13879 states and 20381 transitions. [2023-12-20 02:43:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 02:43:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 0 states have call successors, (0), 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 60 [2023-12-20 02:43:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:00,816 INFO L225 Difference]: With dead ends: 13879 [2023-12-20 02:43:00,816 INFO L226 Difference]: Without dead ends: 10757 [2023-12-20 02:43:00,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-20 02:43:00,822 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 654 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:00,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1215 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2023-12-20 02:43:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10207. [2023-12-20 02:43:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 10206 states have (on average 1.4493435234175975) internal successors, (14792), 10206 states have internal predecessors, (14792), 0 states have call successors, (0), 0 states 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 02:43:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 14792 transitions. [2023-12-20 02:43:00,943 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 14792 transitions. Word has length 60 [2023-12-20 02:43:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:00,944 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 14792 transitions. [2023-12-20 02:43:00,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 02:43:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 14792 transitions. [2023-12-20 02:43:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:43:00,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:00,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:00,953 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 02:43:01,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:01,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:01,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash -849096725, now seen corresponding path program 1 times [2023-12-20 02:43:01,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:01,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040898005] [2023-12-20 02:43:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040898005] [2023-12-20 02:43:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040898005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:01,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:01,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:43:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389900341] [2023-12-20 02:43:01,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:01,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:43:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:43:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:43:01,182 INFO L87 Difference]: Start difference. First operand 10207 states and 14792 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:43:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:01,231 INFO L93 Difference]: Finished difference Result 23523 states and 33954 transitions. [2023-12-20 02:43:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:43:01,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 02:43:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:01,252 INFO L225 Difference]: With dead ends: 23523 [2023-12-20 02:43:01,252 INFO L226 Difference]: Without dead ends: 16193 [2023-12-20 02:43:01,263 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 02:43:01,264 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:01,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 220 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:01,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16193 states. [2023-12-20 02:43:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16193 to 16191. [2023-12-20 02:43:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16191 states, 16190 states have (on average 1.4243360098826436) internal successors, (23060), 16190 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states 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 02:43:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16191 states to 16191 states and 23060 transitions. [2023-12-20 02:43:01,498 INFO L78 Accepts]: Start accepts. Automaton has 16191 states and 23060 transitions. Word has length 61 [2023-12-20 02:43:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:01,498 INFO L495 AbstractCegarLoop]: Abstraction has 16191 states and 23060 transitions. [2023-12-20 02:43:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:43:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16191 states and 23060 transitions. [2023-12-20 02:43:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:43:01,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:01,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:43:01,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:01,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 102412456, now seen corresponding path program 1 times [2023-12-20 02:43:01,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:01,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493358735] [2023-12-20 02:43:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 02:43:01,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493358735] [2023-12-20 02:43:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493358735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:43:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874479247] [2023-12-20 02:43:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:43:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:43:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:43:01,561 INFO L87 Difference]: Start difference. First operand 16191 states and 23060 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 02:43:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:01,793 INFO L93 Difference]: Finished difference Result 31727 states and 45394 transitions. [2023-12-20 02:43:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:43:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 61 [2023-12-20 02:43:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:01,834 INFO L225 Difference]: With dead ends: 31727 [2023-12-20 02:43:01,834 INFO L226 Difference]: Without dead ends: 24845 [2023-12-20 02:43:01,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:43:01,847 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 337 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:01,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 573 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24845 states. [2023-12-20 02:43:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24845 to 22027. [2023-12-20 02:43:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22027 states, 22026 states have (on average 1.4175065831290292) internal successors, (31222), 22026 states have internal predecessors, (31222), 0 states have call successors, (0), 0 states 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 02:43:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22027 states to 22027 states and 31222 transitions. [2023-12-20 02:43:02,134 INFO L78 Accepts]: Start accepts. Automaton has 22027 states and 31222 transitions. Word has length 61 [2023-12-20 02:43:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:02,134 INFO L495 AbstractCegarLoop]: Abstraction has 22027 states and 31222 transitions. [2023-12-20 02:43:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 02:43:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 22027 states and 31222 transitions. [2023-12-20 02:43:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:43:02,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:02,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:02,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:43:02,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:02,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1774270321, now seen corresponding path program 1 times [2023-12-20 02:43:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:02,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93280931] [2023-12-20 02:43:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93280931] [2023-12-20 02:43:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93280931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:02,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:02,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:43:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439956648] [2023-12-20 02:43:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:02,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:43:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:43:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:43:02,166 INFO L87 Difference]: Start difference. First operand 22027 states and 31222 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:43:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:02,242 INFO L93 Difference]: Finished difference Result 37125 states and 52340 transitions. [2023-12-20 02:43:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:43:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 02:43:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:02,275 INFO L225 Difference]: With dead ends: 37125 [2023-12-20 02:43:02,276 INFO L226 Difference]: Without dead ends: 22847 [2023-12-20 02:43:02,293 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 02:43:02,294 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 67 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:02,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 259 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22847 states. [2023-12-20 02:43:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22847 to 22119. [2023-12-20 02:43:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 22118 states have (on average 1.387557645356723) internal successors, (30690), 22118 states have internal predecessors, (30690), 0 states have call successors, (0), 0 states 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 02:43:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 30690 transitions. [2023-12-20 02:43:02,689 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 30690 transitions. Word has length 61 [2023-12-20 02:43:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:02,689 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 30690 transitions. [2023-12-20 02:43:02,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:43:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 30690 transitions. [2023-12-20 02:43:02,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:43:02,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:02,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:02,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:43:02,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:02,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash 977464216, now seen corresponding path program 1 times [2023-12-20 02:43:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:02,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659534164] [2023-12-20 02:43:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 02:43:02,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:02,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659534164] [2023-12-20 02:43:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659534164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:02,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:43:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245699711] [2023-12-20 02:43:02,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:43:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:43:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:43:02,748 INFO L87 Difference]: Start difference. First operand 22119 states and 30690 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 02:43:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:02,846 INFO L93 Difference]: Finished difference Result 32018 states and 44845 transitions. [2023-12-20 02:43:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:43:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-12-20 02:43:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:02,882 INFO L225 Difference]: With dead ends: 32018 [2023-12-20 02:43:02,882 INFO L226 Difference]: Without dead ends: 28408 [2023-12-20 02:43:02,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:43:02,893 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 344 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:02,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 561 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2023-12-20 02:43:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 25567. [2023-12-20 02:43:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25567 states, 25566 states have (on average 1.3887976218415083) internal successors, (35506), 25566 states have internal predecessors, (35506), 0 states have call successors, (0), 0 states 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 02:43:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25567 states to 25567 states and 35506 transitions. [2023-12-20 02:43:03,307 INFO L78 Accepts]: Start accepts. Automaton has 25567 states and 35506 transitions. Word has length 61 [2023-12-20 02:43:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:03,307 INFO L495 AbstractCegarLoop]: Abstraction has 25567 states and 35506 transitions. [2023-12-20 02:43:03,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 02:43:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 25567 states and 35506 transitions. [2023-12-20 02:43:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:43:03,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:03,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:43:03,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:03,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1662623151, now seen corresponding path program 1 times [2023-12-20 02:43:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745314257] [2023-12-20 02:43:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 02:43:03,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745314257] [2023-12-20 02:43:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745314257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:03,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:03,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:43:03,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556216338] [2023-12-20 02:43:03,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:03,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:43:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:03,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:43:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:43:03,363 INFO L87 Difference]: Start difference. First operand 25567 states and 35506 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 02:43:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:03,470 INFO L93 Difference]: Finished difference Result 39746 states and 55627 transitions. [2023-12-20 02:43:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:43:03,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 61 [2023-12-20 02:43:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:03,520 INFO L225 Difference]: With dead ends: 39746 [2023-12-20 02:43:03,521 INFO L226 Difference]: Without dead ends: 33495 [2023-12-20 02:43:03,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:43:03,535 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 339 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:03,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 582 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33495 states. [2023-12-20 02:43:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33495 to 30639. [2023-12-20 02:43:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30639 states, 30638 states have (on average 1.3844245707944383) internal successors, (42416), 30638 states have internal predecessors, (42416), 0 states have call successors, (0), 0 states 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 02:43:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30639 states to 30639 states and 42416 transitions. [2023-12-20 02:43:04,121 INFO L78 Accepts]: Start accepts. Automaton has 30639 states and 42416 transitions. Word has length 61 [2023-12-20 02:43:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:04,121 INFO L495 AbstractCegarLoop]: Abstraction has 30639 states and 42416 transitions. [2023-12-20 02:43:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 02:43:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 30639 states and 42416 transitions. [2023-12-20 02:43:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:43:04,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:04,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:43:04,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:04,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash -958977494, now seen corresponding path program 1 times [2023-12-20 02:43:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121636185] [2023-12-20 02:43:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:04,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121636185] [2023-12-20 02:43:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121636185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:04,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:04,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:43:04,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929338299] [2023-12-20 02:43:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:04,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:43:04,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:04,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:43:04,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:43:04,163 INFO L87 Difference]: Start difference. First operand 30639 states and 42416 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 02:43:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:04,287 INFO L93 Difference]: Finished difference Result 60396 states and 83326 transitions. [2023-12-20 02:43:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:43:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 64 [2023-12-20 02:43:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:04,324 INFO L225 Difference]: With dead ends: 60396 [2023-12-20 02:43:04,324 INFO L226 Difference]: Without dead ends: 31657 [2023-12-20 02:43:04,349 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 02:43:04,350 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:04,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 270 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:43:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31657 states. [2023-12-20 02:43:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31657 to 30150. [2023-12-20 02:43:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30150 states, 30149 states have (on average 1.3574579588046038) internal successors, (40926), 30149 states have internal predecessors, (40926), 0 states have call successors, (0), 0 states 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 02:43:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30150 states to 30150 states and 40926 transitions. [2023-12-20 02:43:05,038 INFO L78 Accepts]: Start accepts. Automaton has 30150 states and 40926 transitions. Word has length 64 [2023-12-20 02:43:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:05,038 INFO L495 AbstractCegarLoop]: Abstraction has 30150 states and 40926 transitions. [2023-12-20 02:43:05,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 02:43:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 30150 states and 40926 transitions. [2023-12-20 02:43:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:43:05,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:05,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:43:05,042 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash 561582588, now seen corresponding path program 1 times [2023-12-20 02:43:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906674246] [2023-12-20 02:43:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 02:43:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906674246] [2023-12-20 02:43:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906674246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:43:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:43:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:43:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515308719] [2023-12-20 02:43:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:43:05,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:43:05,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:43:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:43:05,099 INFO L87 Difference]: Start difference. First operand 30150 states and 40926 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 02:43:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:05,287 INFO L93 Difference]: Finished difference Result 68966 states and 93454 transitions. [2023-12-20 02:43:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:43:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 66 [2023-12-20 02:43:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:05,442 INFO L225 Difference]: With dead ends: 68966 [2023-12-20 02:43:05,442 INFO L226 Difference]: Without dead ends: 38880 [2023-12-20 02:43:05,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:43:05,469 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 452 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:05,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 141 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:43:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38880 states. [2023-12-20 02:43:05,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38880 to 38542. [2023-12-20 02:43:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38542 states, 38541 states have (on average 1.3410134661788744) internal successors, (51684), 38541 states have internal predecessors, (51684), 0 states have call successors, (0), 0 states 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 02:43:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38542 states to 38542 states and 51684 transitions. [2023-12-20 02:43:05,893 INFO L78 Accepts]: Start accepts. Automaton has 38542 states and 51684 transitions. Word has length 66 [2023-12-20 02:43:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:05,894 INFO L495 AbstractCegarLoop]: Abstraction has 38542 states and 51684 transitions. [2023-12-20 02:43:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 02:43:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 38542 states and 51684 transitions. [2023-12-20 02:43:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:43:05,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:05,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:05,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:43:05,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:05,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1883270751, now seen corresponding path program 1 times [2023-12-20 02:43:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:05,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705777582] [2023-12-20 02:43:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705777582] [2023-12-20 02:43:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705777582] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:43:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235782579] [2023-12-20 02:43:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:06,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:43:06,021 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 02:43:06,049 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 02:43:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:06,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:43:06,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:43:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:06,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:43:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235782579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:43:06,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:43:06,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 02:43:06,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470459166] [2023-12-20 02:43:06,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:43:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 02:43:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 02:43:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 02:43:06,335 INFO L87 Difference]: Start difference. First operand 38542 states and 51684 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 02:43:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:06,891 INFO L93 Difference]: Finished difference Result 110084 states and 147482 transitions. [2023-12-20 02:43:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:43:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 66 [2023-12-20 02:43:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:06,976 INFO L225 Difference]: With dead ends: 110084 [2023-12-20 02:43:06,977 INFO L226 Difference]: Without dead ends: 81777 [2023-12-20 02:43:07,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-20 02:43:07,010 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2086 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:07,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 375 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:43:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81777 states. [2023-12-20 02:43:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81777 to 44149. [2023-12-20 02:43:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44149 states, 44148 states have (on average 1.3418727915194346) internal successors, (59241), 44148 states have internal predecessors, (59241), 0 states have call successors, (0), 0 states 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 02:43:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44149 states to 44149 states and 59241 transitions. [2023-12-20 02:43:07,770 INFO L78 Accepts]: Start accepts. Automaton has 44149 states and 59241 transitions. Word has length 66 [2023-12-20 02:43:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:07,771 INFO L495 AbstractCegarLoop]: Abstraction has 44149 states and 59241 transitions. [2023-12-20 02:43:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 02:43:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 44149 states and 59241 transitions. [2023-12-20 02:43:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:43:07,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:07,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:07,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 02:43:07,980 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,SelfDestructingSolverStorable16 [2023-12-20 02:43:07,980 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:07,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1114568617, now seen corresponding path program 1 times [2023-12-20 02:43:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:07,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676201306] [2023-12-20 02:43:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:07,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:08,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:08,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676201306] [2023-12-20 02:43:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676201306] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:43:08,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584261783] [2023-12-20 02:43:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:08,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:08,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:43:08,059 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 02:43:08,094 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 02:43:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:08,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:43:08,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:43:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:08,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:43:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584261783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:43:08,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:43:08,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 02:43:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352240] [2023-12-20 02:43:08,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:43:08,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 02:43:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 02:43:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 02:43:08,465 INFO L87 Difference]: Start difference. First operand 44149 states and 59241 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 02:43:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:08,823 INFO L93 Difference]: Finished difference Result 98843 states and 131507 transitions. [2023-12-20 02:43:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:43:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 66 [2023-12-20 02:43:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:08,890 INFO L225 Difference]: With dead ends: 98843 [2023-12-20 02:43:08,890 INFO L226 Difference]: Without dead ends: 62458 [2023-12-20 02:43:08,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-20 02:43:08,921 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1694 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:08,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 268 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:43:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62458 states. [2023-12-20 02:43:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62458 to 44579. [2023-12-20 02:43:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44579 states, 44578 states have (on average 1.3339539683251829) internal successors, (59465), 44578 states have internal predecessors, (59465), 0 states have call successors, (0), 0 states 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 02:43:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44579 states to 44579 states and 59465 transitions. [2023-12-20 02:43:09,651 INFO L78 Accepts]: Start accepts. Automaton has 44579 states and 59465 transitions. Word has length 66 [2023-12-20 02:43:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:09,651 INFO L495 AbstractCegarLoop]: Abstraction has 44579 states and 59465 transitions. [2023-12-20 02:43:09,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 02:43:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44579 states and 59465 transitions. [2023-12-20 02:43:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:43:09,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:09,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:09,659 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 02:43:09,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 02:43:09,859 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:09,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2036642874, now seen corresponding path program 1 times [2023-12-20 02:43:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27270425] [2023-12-20 02:43:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27270425] [2023-12-20 02:43:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27270425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:43:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722484675] [2023-12-20 02:43:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:43:09,970 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 02:43:10,009 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 02:43:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:10,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:43:10,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:43:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:10,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:43:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722484675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:43:10,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:43:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 02:43:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617471995] [2023-12-20 02:43:10,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:43:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 02:43:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 02:43:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 02:43:10,259 INFO L87 Difference]: Start difference. First operand 44579 states and 59465 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:43:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:43:10,799 INFO L93 Difference]: Finished difference Result 105907 states and 140300 transitions. [2023-12-20 02:43:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 02:43:10,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 02:43:10,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:43:10,876 INFO L225 Difference]: With dead ends: 105907 [2023-12-20 02:43:10,876 INFO L226 Difference]: Without dead ends: 82344 [2023-12-20 02:43:10,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-20 02:43:10,889 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 873 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:43:10,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 358 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:43:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82344 states. [2023-12-20 02:43:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82344 to 50103. [2023-12-20 02:43:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50103 states, 50102 states have (on average 1.3319228773302463) internal successors, (66732), 50102 states have internal predecessors, (66732), 0 states have call successors, (0), 0 states 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 02:43:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50103 states to 50103 states and 66732 transitions. [2023-12-20 02:43:11,581 INFO L78 Accepts]: Start accepts. Automaton has 50103 states and 66732 transitions. Word has length 66 [2023-12-20 02:43:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:43:11,581 INFO L495 AbstractCegarLoop]: Abstraction has 50103 states and 66732 transitions. [2023-12-20 02:43:11,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:43:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 50103 states and 66732 transitions. [2023-12-20 02:43:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 02:43:11,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:43:11,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:43:11,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 02:43:11,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:11,790 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:43:11,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:43:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1381001051, now seen corresponding path program 1 times [2023-12-20 02:43:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:43:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310174864] [2023-12-20 02:43:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:43:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:11,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:43:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310174864] [2023-12-20 02:43:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310174864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:43:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361640948] [2023-12-20 02:43:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:43:11,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:43:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:43:11,990 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 02:43:12,027 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 02:43:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:43:12,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 02:43:12,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:43:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:13,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:43:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:43:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361640948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:43:14,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:43:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 16] total 34 [2023-12-20 02:43:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862496347] [2023-12-20 02:43:14,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:43:14,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 02:43:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:43:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 02:43:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 02:43:14,406 INFO L87 Difference]: Start difference. First operand 50103 states and 66732 transitions. Second operand has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:45:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:45:55,799 INFO L93 Difference]: Finished difference Result 1930489 states and 2503259 transitions. [2023-12-20 02:45:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1893 states. [2023-12-20 02:45:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 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 68 [2023-12-20 02:45:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:46:01,142 INFO L225 Difference]: With dead ends: 1930489 [2023-12-20 02:46:01,142 INFO L226 Difference]: Without dead ends: 1879970 [2023-12-20 02:46:01,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2029 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1920 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955011 ImplicationChecksByTransitivity, 130.6s TimeCoverageRelationStatistics Valid=346386, Invalid=3345776, Unknown=0, NotChecked=0, Total=3692162 [2023-12-20 02:46:01,683 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 26031 mSDsluCounter, 11822 mSDsCounter, 0 mSdLazyCounter, 17015 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26031 SdHoareTripleChecker+Valid, 12260 SdHoareTripleChecker+Invalid, 17477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 17015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-20 02:46:01,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26031 Valid, 12260 Invalid, 17477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [462 Valid, 17015 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-12-20 02:46:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879970 states. [2023-12-20 02:46:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879970 to 317070. [2023-12-20 02:46:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317070 states, 317069 states have (on average 1.3202236737114004) internal successors, (418602), 317069 states have internal predecessors, (418602), 0 states have call successors, (0), 0 states 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 02:46:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317070 states to 317070 states and 418602 transitions. [2023-12-20 02:46:17,362 INFO L78 Accepts]: Start accepts. Automaton has 317070 states and 418602 transitions. Word has length 68 [2023-12-20 02:46:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:46:17,362 INFO L495 AbstractCegarLoop]: Abstraction has 317070 states and 418602 transitions. [2023-12-20 02:46:17,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.371428571428571) internal successors, (188), 34 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:46:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 317070 states and 418602 transitions. [2023-12-20 02:46:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:46:17,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:46:17,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:46:17,392 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 02:46:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:46:17,579 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:46:17,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:46:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash -879412921, now seen corresponding path program 1 times [2023-12-20 02:46:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:46:17,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764176125] [2023-12-20 02:46:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:46:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:46:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:46:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 02:46:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:46:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764176125] [2023-12-20 02:46:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764176125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:46:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:46:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:46:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815125453] [2023-12-20 02:46:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:46:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:46:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:46:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:46:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:46:17,657 INFO L87 Difference]: Start difference. First operand 317070 states and 418602 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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)