/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 02:01:48,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 02:01:48,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 02:01:48,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 02:01:48,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 02:01:48,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 02:01:48,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 02:01:48,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 02:01:48,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 02:01:48,702 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 02:01:48,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 02:01:48,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 02:01:48,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 02:01:48,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 02:01:48,703 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 02:01:48,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 02:01:48,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 02:01:48,704 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 02:01:48,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 02:01:48,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 02:01:48,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 02:01:48,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 02:01:48,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 02:01:48,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 02:01:48,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 02:01:48,706 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 02:01:48,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 02:01:48,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 02:01:48,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 02:01:48,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 02:01:48,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 02:01:48,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 02:01:48,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:01:48,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 02:01:48,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 02:01:48,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 02:01:48,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 02:01:48,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 02:01:48,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 02:01:48,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 02:01:48,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 02:01:48,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 02:01:48,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 02:01:48,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 02:01:48,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 02:01:48,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 02:01:48,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 02:01:48,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 02:01:48,899 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 02:01:48,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59.c [2023-12-19 02:01:50,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 02:01:50,291 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 02:01:50,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59.c [2023-12-19 02:01:50,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389a7e5bf/86387f21b72d434cae7817c9189e218d/FLAG9d83ba316 [2023-12-19 02:01:50,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389a7e5bf/86387f21b72d434cae7817c9189e218d [2023-12-19 02:01:50,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 02:01:50,320 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 02:01:50,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 02:01:50,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 02:01:50,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 02:01:50,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:01:50" (1/1) ... [2023-12-19 02:01:50,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513813af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:50, skipping insertion in model container [2023-12-19 02:01:50,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:01:50" (1/1) ... [2023-12-19 02:01:50,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 02:01:50,849 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59.c[57711,57724] [2023-12-19 02:01:50,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:01:50,898 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 02:01:51,185 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59.c[57711,57724] [2023-12-19 02:01:51,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:01:51,231 INFO L206 MainTranslator]: Completed translation [2023-12-19 02:01:51,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51 WrapperNode [2023-12-19 02:01:51,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 02:01:51,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 02:01:51,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 02:01:51,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 02:01:51,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,424 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-19 02:01:51,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 02:01:51,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 02:01:51,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 02:01:51,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 02:01:51,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,500 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]. [2023-12-19 02:01:51,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 02:01:51,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 02:01:51,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 02:01:51,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 02:01:51,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (1/1) ... [2023-12-19 02:01:51,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:01:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:01:51,645 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) [2023-12-19 02:01:51,665 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 [2023-12-19 02:01:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 02:01:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 02:01:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 02:01:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 02:01:51,766 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 02:01:51,768 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 02:01:53,119 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 02:01:53,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 02:01:53,177 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 02:01:53,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:01:53 BoogieIcfgContainer [2023-12-19 02:01:53,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 02:01:53,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 02:01:53,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 02:01:53,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 02:01:53,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:01:50" (1/3) ... [2023-12-19 02:01:53,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bd4e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:01:53, skipping insertion in model container [2023-12-19 02:01:53,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:51" (2/3) ... [2023-12-19 02:01:53,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bd4e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:01:53, skipping insertion in model container [2023-12-19 02:01:53,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:01:53" (3/3) ... [2023-12-19 02:01:53,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label59.c [2023-12-19 02:01:53,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 02:01:53,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 02:01:53,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 02:01:53,265 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;@9de8e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 02:01:53,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 02:01:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 02:01:53,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:53,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:53,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:53,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash 554871622, now seen corresponding path program 1 times [2023-12-19 02:01:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286957933] [2023-12-19 02:01:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:53,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:53,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286957933] [2023-12-19 02:01:53,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286957933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:53,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:53,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823867256] [2023-12-19 02:01:53,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 02:01:53,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 02:01:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 02:01:54,012 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:54,061 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-19 02:01:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 02:01:54,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-19 02:01:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:54,080 INFO L225 Difference]: With dead ends: 479 [2023-12-19 02:01:54,080 INFO L226 Difference]: Without dead ends: 238 [2023-12-19 02:01:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 02:01:54,089 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:54,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 02:01:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-19 02:01:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-19 02:01:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-19 02:01:54,147 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 173 [2023-12-19 02:01:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:54,149 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-19 02:01:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-19 02:01:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 02:01:54,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:54,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 02:01:54,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash 707037559, now seen corresponding path program 1 times [2023-12-19 02:01:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184877714] [2023-12-19 02:01:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184877714] [2023-12-19 02:01:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184877714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:54,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:54,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606787324] [2023-12-19 02:01:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:54,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:54,691 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:55,400 INFO L93 Difference]: Finished difference Result 704 states and 1166 transitions. [2023-12-19 02:01:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:55,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-19 02:01:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:55,403 INFO L225 Difference]: With dead ends: 704 [2023-12-19 02:01:55,403 INFO L226 Difference]: Without dead ends: 467 [2023-12-19 02:01:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:55,405 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 71 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:55,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-19 02:01:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2023-12-19 02:01:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.6283185840707965) internal successors, (736), 452 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2023-12-19 02:01:55,421 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 173 [2023-12-19 02:01:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:55,422 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2023-12-19 02:01:55,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2023-12-19 02:01:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 02:01:55,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:55,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:55,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 02:01:55,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1838677037, now seen corresponding path program 1 times [2023-12-19 02:01:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210969032] [2023-12-19 02:01:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210969032] [2023-12-19 02:01:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210969032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160904445] [2023-12-19 02:01:55,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:55,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:55,615 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:56,333 INFO L93 Difference]: Finished difference Result 1329 states and 2168 transitions. [2023-12-19 02:01:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:56,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-12-19 02:01:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:56,337 INFO L225 Difference]: With dead ends: 1329 [2023-12-19 02:01:56,337 INFO L226 Difference]: Without dead ends: 877 [2023-12-19 02:01:56,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:56,339 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 161 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-19 02:01:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2023-12-19 02:01:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5229357798165137) internal successors, (1328), 872 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1328 transitions. [2023-12-19 02:01:56,358 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1328 transitions. Word has length 178 [2023-12-19 02:01:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:56,358 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1328 transitions. [2023-12-19 02:01:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1328 transitions. [2023-12-19 02:01:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-19 02:01:56,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:56,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:56,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 02:01:56,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:56,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -809045034, now seen corresponding path program 1 times [2023-12-19 02:01:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102760994] [2023-12-19 02:01:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:56,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:56,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102760994] [2023-12-19 02:01:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102760994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:56,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:56,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309962405] [2023-12-19 02:01:56,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:56,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:56,496 INFO L87 Difference]: Start difference. First operand 873 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:57,135 INFO L93 Difference]: Finished difference Result 2574 states and 3934 transitions. [2023-12-19 02:01:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-19 02:01:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:57,143 INFO L225 Difference]: With dead ends: 2574 [2023-12-19 02:01:57,143 INFO L226 Difference]: Without dead ends: 1702 [2023-12-19 02:01:57,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:57,146 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:57,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:01:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-19 02:01:57,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1686. [2023-12-19 02:01:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.4997032640949555) internal successors, (2527), 1685 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2527 transitions. [2023-12-19 02:01:57,181 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2527 transitions. Word has length 181 [2023-12-19 02:01:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:57,182 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2527 transitions. [2023-12-19 02:01:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2527 transitions. [2023-12-19 02:01:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 02:01:57,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:57,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:57,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 02:01:57,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:57,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -493549167, now seen corresponding path program 1 times [2023-12-19 02:01:57,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:57,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753639125] [2023-12-19 02:01:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:57,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753639125] [2023-12-19 02:01:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753639125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:57,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:57,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:57,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107784743] [2023-12-19 02:01:57,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:57,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:57,435 INFO L87 Difference]: Start difference. First operand 1686 states and 2527 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:58,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:58,041 INFO L93 Difference]: Finished difference Result 4193 states and 6265 transitions. [2023-12-19 02:01:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:58,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2023-12-19 02:01:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:58,049 INFO L225 Difference]: With dead ends: 4193 [2023-12-19 02:01:58,050 INFO L226 Difference]: Without dead ends: 2508 [2023-12-19 02:01:58,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:58,053 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:58,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:01:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-19 02:01:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2507. [2023-12-19 02:01:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.4672785315243415) internal successors, (3677), 2506 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3677 transitions. [2023-12-19 02:01:58,100 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3677 transitions. Word has length 183 [2023-12-19 02:01:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:58,100 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3677 transitions. [2023-12-19 02:01:58,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3677 transitions. [2023-12-19 02:01:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-19 02:01:58,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:58,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:58,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 02:01:58,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:58,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1077995673, now seen corresponding path program 1 times [2023-12-19 02:01:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987712505] [2023-12-19 02:01:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987712505] [2023-12-19 02:01:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987712505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:01:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316946854] [2023-12-19 02:01:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:58,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:01:58,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:01:58,436 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) [2023-12-19 02:01:58,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 02:01:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:58,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:01:58,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:01:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:01:58,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:01:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316946854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:58,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:01:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-19 02:01:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410239375] [2023-12-19 02:01:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:58,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:01:58,794 INFO L87 Difference]: Start difference. First operand 2507 states and 3677 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:59,406 INFO L93 Difference]: Finished difference Result 7452 states and 10940 transitions. [2023-12-19 02:01:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 188 [2023-12-19 02:01:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:59,425 INFO L225 Difference]: With dead ends: 7452 [2023-12-19 02:01:59,425 INFO L226 Difference]: Without dead ends: 4946 [2023-12-19 02:01:59,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:01:59,435 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 58 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:59,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 426 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2023-12-19 02:01:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4132. [2023-12-19 02:01:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 1.3343016218833212) internal successors, (5512), 4131 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 5512 transitions. [2023-12-19 02:01:59,521 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 5512 transitions. Word has length 188 [2023-12-19 02:01:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:59,522 INFO L495 AbstractCegarLoop]: Abstraction has 4132 states and 5512 transitions. [2023-12-19 02:01:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 5512 transitions. [2023-12-19 02:01:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 02:01:59,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:59,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:59,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 02:01:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-19 02:01:59,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:59,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1300934582, now seen corresponding path program 1 times [2023-12-19 02:01:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:59,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424887016] [2023-12-19 02:01:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:59,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424887016] [2023-12-19 02:02:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424887016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:00,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:02:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065801557] [2023-12-19 02:02:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:00,089 INFO L87 Difference]: Start difference. First operand 4132 states and 5512 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:00,768 INFO L93 Difference]: Finished difference Result 10304 states and 13689 transitions. [2023-12-19 02:02:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-19 02:02:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:00,789 INFO L225 Difference]: With dead ends: 10304 [2023-12-19 02:02:00,789 INFO L226 Difference]: Without dead ends: 6173 [2023-12-19 02:02:00,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:00,796 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:00,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 188 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6173 states. [2023-12-19 02:02:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6173 to 6162. [2023-12-19 02:02:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6161 states have (on average 1.2952442785262133) internal successors, (7980), 6161 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 7980 transitions. [2023-12-19 02:02:00,891 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 7980 transitions. Word has length 192 [2023-12-19 02:02:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:00,891 INFO L495 AbstractCegarLoop]: Abstraction has 6162 states and 7980 transitions. [2023-12-19 02:02:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 7980 transitions. [2023-12-19 02:02:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 02:02:00,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:00,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:00,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 02:02:00,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:00,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1018689561, now seen corresponding path program 1 times [2023-12-19 02:02:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150614683] [2023-12-19 02:02:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150614683] [2023-12-19 02:02:01,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150614683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023050303] [2023-12-19 02:02:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:01,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:01,287 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) [2023-12-19 02:02:01,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 02:02:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:01,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:01,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:02:01,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023050303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 02:02:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712419436] [2023-12-19 02:02:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:01,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:01,457 INFO L87 Difference]: Start difference. First operand 6162 states and 7980 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:02,148 INFO L93 Difference]: Finished difference Result 15573 states and 20583 transitions. [2023-12-19 02:02:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 199 [2023-12-19 02:02:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:02,176 INFO L225 Difference]: With dead ends: 15573 [2023-12-19 02:02:02,176 INFO L226 Difference]: Without dead ends: 9412 [2023-12-19 02:02:02,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:02,186 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 225 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:02,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 166 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9412 states. [2023-12-19 02:02:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9412 to 9410. [2023-12-19 02:02:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9410 states, 9409 states have (on average 1.2464661494313956) internal successors, (11728), 9409 states have internal predecessors, (11728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11728 transitions. [2023-12-19 02:02:02,355 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11728 transitions. Word has length 199 [2023-12-19 02:02:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:02,355 INFO L495 AbstractCegarLoop]: Abstraction has 9410 states and 11728 transitions. [2023-12-19 02:02:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11728 transitions. [2023-12-19 02:02:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-19 02:02:02,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:02,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:02,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:02,573 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,SelfDestructingSolverStorable7 [2023-12-19 02:02:02,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:02,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1564470954, now seen corresponding path program 1 times [2023-12-19 02:02:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144248264] [2023-12-19 02:02:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144248264] [2023-12-19 02:02:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144248264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802024195] [2023-12-19 02:02:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:02,924 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) [2023-12-19 02:02:02,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 02:02:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:03,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:03,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:02:03,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802024195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 02:02:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65515549] [2023-12-19 02:02:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:03,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:03,126 INFO L87 Difference]: Start difference. First operand 9410 states and 11728 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:03,999 INFO L93 Difference]: Finished difference Result 25742 states and 32194 transitions. [2023-12-19 02:02:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 200 [2023-12-19 02:02:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:04,029 INFO L225 Difference]: With dead ends: 25742 [2023-12-19 02:02:04,029 INFO L226 Difference]: Without dead ends: 16536 [2023-12-19 02:02:04,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:04,042 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 244 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:04,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 203 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:02:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16536 states. [2023-12-19 02:02:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16536 to 16330. [2023-12-19 02:02:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16330 states, 16329 states have (on average 1.2200992099944883) internal successors, (19923), 16329 states have internal predecessors, (19923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16330 states to 16330 states and 19923 transitions. [2023-12-19 02:02:04,274 INFO L78 Accepts]: Start accepts. Automaton has 16330 states and 19923 transitions. Word has length 200 [2023-12-19 02:02:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:04,275 INFO L495 AbstractCegarLoop]: Abstraction has 16330 states and 19923 transitions. [2023-12-19 02:02:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16330 states and 19923 transitions. [2023-12-19 02:02:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-19 02:02:04,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:04,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:04,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:04,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:04,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:04,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1956494179, now seen corresponding path program 1 times [2023-12-19 02:02:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719279162] [2023-12-19 02:02:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 02:02:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719279162] [2023-12-19 02:02:04,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719279162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478784707] [2023-12-19 02:02:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:04,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:04,810 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) [2023-12-19 02:02:04,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 02:02:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:04,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:04,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 02:02:05,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478784707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:05,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146187969] [2023-12-19 02:02:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:05,133 INFO L87 Difference]: Start difference. First operand 16330 states and 19923 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:05,919 INFO L93 Difference]: Finished difference Result 32459 states and 39631 transitions. [2023-12-19 02:02:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:05,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 231 [2023-12-19 02:02:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:05,951 INFO L225 Difference]: With dead ends: 32459 [2023-12-19 02:02:05,951 INFO L226 Difference]: Without dead ends: 16333 [2023-12-19 02:02:05,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:05,970 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 97 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:05,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 339 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2023-12-19 02:02:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 15924. [2023-12-19 02:02:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15924 states, 15923 states have (on average 1.196759404634805) internal successors, (19056), 15923 states have internal predecessors, (19056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15924 states to 15924 states and 19056 transitions. [2023-12-19 02:02:06,321 INFO L78 Accepts]: Start accepts. Automaton has 15924 states and 19056 transitions. Word has length 231 [2023-12-19 02:02:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:06,321 INFO L495 AbstractCegarLoop]: Abstraction has 15924 states and 19056 transitions. [2023-12-19 02:02:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15924 states and 19056 transitions. [2023-12-19 02:02:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 02:02:06,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:06,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:06,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:06,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:06,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:06,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1270414992, now seen corresponding path program 1 times [2023-12-19 02:02:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853144282] [2023-12-19 02:02:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:06,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:02:06,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:06,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853144282] [2023-12-19 02:02:06,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853144282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:06,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:06,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731904717] [2023-12-19 02:02:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:06,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:02:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:02:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:06,782 INFO L87 Difference]: Start difference. First operand 15924 states and 19056 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:07,642 INFO L93 Difference]: Finished difference Result 61187 states and 73308 transitions. [2023-12-19 02:02:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:02:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 233 [2023-12-19 02:02:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:07,718 INFO L225 Difference]: With dead ends: 61187 [2023-12-19 02:02:07,719 INFO L226 Difference]: Without dead ends: 45467 [2023-12-19 02:02:07,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:07,746 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 880 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:07,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 325 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45467 states. [2023-12-19 02:02:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45467 to 45457. [2023-12-19 02:02:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45457 states, 45456 states have (on average 1.1918118620204154) internal successors, (54175), 45456 states have internal predecessors, (54175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45457 states to 45457 states and 54175 transitions. [2023-12-19 02:02:08,398 INFO L78 Accepts]: Start accepts. Automaton has 45457 states and 54175 transitions. Word has length 233 [2023-12-19 02:02:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:08,399 INFO L495 AbstractCegarLoop]: Abstraction has 45457 states and 54175 transitions. [2023-12-19 02:02:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 45457 states and 54175 transitions. [2023-12-19 02:02:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-19 02:02:08,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:08,412 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:08,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 02:02:08,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:08,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash -964109443, now seen corresponding path program 1 times [2023-12-19 02:02:08,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:08,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216453052] [2023-12-19 02:02:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216453052] [2023-12-19 02:02:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216453052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195617861] [2023-12-19 02:02:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:02:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:02:08,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:08,964 INFO L87 Difference]: Start difference. First operand 45457 states and 54175 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:10,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:10,129 INFO L93 Difference]: Finished difference Result 108214 states and 128647 transitions. [2023-12-19 02:02:10,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:02:10,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2023-12-19 02:02:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:10,535 INFO L225 Difference]: With dead ends: 108214 [2023-12-19 02:02:10,536 INFO L226 Difference]: Without dead ends: 62961 [2023-12-19 02:02:10,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:10,627 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 357 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:10,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 216 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:02:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62961 states. [2023-12-19 02:02:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62961 to 59471. [2023-12-19 02:02:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59471 states, 59470 states have (on average 1.171750462418026) internal successors, (69684), 59470 states have internal predecessors, (69684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59471 states to 59471 states and 69684 transitions. [2023-12-19 02:02:11,619 INFO L78 Accepts]: Start accepts. Automaton has 59471 states and 69684 transitions. Word has length 243 [2023-12-19 02:02:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:11,619 INFO L495 AbstractCegarLoop]: Abstraction has 59471 states and 69684 transitions. [2023-12-19 02:02:11,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 59471 states and 69684 transitions. [2023-12-19 02:02:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-19 02:02:11,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:11,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 02:02:11,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:11,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -575328253, now seen corresponding path program 1 times [2023-12-19 02:02:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026713028] [2023-12-19 02:02:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:12,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026713028] [2023-12-19 02:02:12,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026713028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:12,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:12,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:02:12,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090348557] [2023-12-19 02:02:12,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:12,427 INFO L87 Difference]: Start difference. First operand 59471 states and 69684 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:13,459 INFO L93 Difference]: Finished difference Result 122396 states and 143076 transitions. [2023-12-19 02:02:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-12-19 02:02:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:13,561 INFO L225 Difference]: With dead ends: 122396 [2023-12-19 02:02:13,561 INFO L226 Difference]: Without dead ends: 63535 [2023-12-19 02:02:13,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:13,578 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 136 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:13,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 193 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:02:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63535 states. [2023-12-19 02:02:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63535 to 63125. [2023-12-19 02:02:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63125 states, 63124 states have (on average 1.1657689626766365) internal successors, (73588), 63124 states have internal predecessors, (73588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63125 states to 63125 states and 73588 transitions. [2023-12-19 02:02:14,543 INFO L78 Accepts]: Start accepts. Automaton has 63125 states and 73588 transitions. Word has length 247 [2023-12-19 02:02:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:14,544 INFO L495 AbstractCegarLoop]: Abstraction has 63125 states and 73588 transitions. [2023-12-19 02:02:14,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 63125 states and 73588 transitions. [2023-12-19 02:02:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-19 02:02:14,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:14,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:14,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 02:02:14,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:14,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:14,559 INFO L85 PathProgramCache]: Analyzing trace with hash 380055575, now seen corresponding path program 1 times [2023-12-19 02:02:14,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:14,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280970504] [2023-12-19 02:02:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:14,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-19 02:02:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280970504] [2023-12-19 02:02:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280970504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:15,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:15,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:02:15,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711386517] [2023-12-19 02:02:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:15,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:15,048 INFO L87 Difference]: Start difference. First operand 63125 states and 73588 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:15,987 INFO L93 Difference]: Finished difference Result 125852 states and 146827 transitions. [2023-12-19 02:02:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 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 270 [2023-12-19 02:02:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:16,233 INFO L225 Difference]: With dead ends: 125852 [2023-12-19 02:02:16,233 INFO L226 Difference]: Without dead ends: 66991 [2023-12-19 02:02:16,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:16,328 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 186 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:16,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 194 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66991 states. [2023-12-19 02:02:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66991 to 66783. [2023-12-19 02:02:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66783 states, 66782 states have (on average 1.161480638495403) internal successors, (77566), 66782 states have internal predecessors, (77566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66783 states to 66783 states and 77566 transitions. [2023-12-19 02:02:17,504 INFO L78 Accepts]: Start accepts. Automaton has 66783 states and 77566 transitions. Word has length 270 [2023-12-19 02:02:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:17,504 INFO L495 AbstractCegarLoop]: Abstraction has 66783 states and 77566 transitions. [2023-12-19 02:02:17,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 66783 states and 77566 transitions. [2023-12-19 02:02:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-19 02:02:17,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:17,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 02:02:17,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:17,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 630222717, now seen corresponding path program 1 times [2023-12-19 02:02:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257669232] [2023-12-19 02:02:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:17,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257669232] [2023-12-19 02:02:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257669232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876159156] [2023-12-19 02:02:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:17,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:17,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:17,903 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) [2023-12-19 02:02:17,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 02:02:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:18,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:18,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:18,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:18,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876159156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:18,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630782352] [2023-12-19 02:02:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:18,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:18,253 INFO L87 Difference]: Start difference. First operand 66783 states and 77566 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:19,231 INFO L93 Difference]: Finished difference Result 128736 states and 149197 transitions. [2023-12-19 02:02:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2023-12-19 02:02:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:19,346 INFO L225 Difference]: With dead ends: 128736 [2023-12-19 02:02:19,346 INFO L226 Difference]: Without dead ends: 62360 [2023-12-19 02:02:19,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:19,391 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 64 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:19,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 383 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62360 states. [2023-12-19 02:02:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62360 to 62317. [2023-12-19 02:02:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62317 states, 62316 states have (on average 1.1469927466461263) internal successors, (71476), 62316 states have internal predecessors, (71476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62317 states to 62317 states and 71476 transitions. [2023-12-19 02:02:20,302 INFO L78 Accepts]: Start accepts. Automaton has 62317 states and 71476 transitions. Word has length 275 [2023-12-19 02:02:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:20,302 INFO L495 AbstractCegarLoop]: Abstraction has 62317 states and 71476 transitions. [2023-12-19 02:02:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 62317 states and 71476 transitions. [2023-12-19 02:02:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-19 02:02:20,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:20,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:20,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 02:02:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 02:02:20,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:20,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -529784433, now seen corresponding path program 1 times [2023-12-19 02:02:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154240181] [2023-12-19 02:02:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 137 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154240181] [2023-12-19 02:02:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154240181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438189761] [2023-12-19 02:02:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:21,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:21,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:21,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:02:21,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 02:02:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:21,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 02:02:21,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:02:21,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438189761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159163296] [2023-12-19 02:02:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:21,422 INFO L87 Difference]: Start difference. First operand 62317 states and 71476 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:22,506 INFO L93 Difference]: Finished difference Result 140300 states and 162129 transitions. [2023-12-19 02:02:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 311 [2023-12-19 02:02:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:22,625 INFO L225 Difference]: With dead ends: 140300 [2023-12-19 02:02:22,625 INFO L226 Difference]: Without dead ends: 82247 [2023-12-19 02:02:22,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:22,682 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 217 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:22,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 370 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:02:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82247 states. [2023-12-19 02:02:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82247 to 82021. [2023-12-19 02:02:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82021 states, 82020 states have (on average 1.1410997317727383) internal successors, (93593), 82020 states have internal predecessors, (93593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82021 states to 82021 states and 93593 transitions. [2023-12-19 02:02:24,064 INFO L78 Accepts]: Start accepts. Automaton has 82021 states and 93593 transitions. Word has length 311 [2023-12-19 02:02:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:24,064 INFO L495 AbstractCegarLoop]: Abstraction has 82021 states and 93593 transitions. [2023-12-19 02:02:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 82021 states and 93593 transitions. [2023-12-19 02:02:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-19 02:02:24,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:24,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:24,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 02:02:24,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 02:02:24,361 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:24,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1608615525, now seen corresponding path program 1 times [2023-12-19 02:02:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718838508] [2023-12-19 02:02:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-19 02:02:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718838508] [2023-12-19 02:02:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718838508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74220977] [2023-12-19 02:02:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:02:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:02:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:24,736 INFO L87 Difference]: Start difference. First operand 82021 states and 93593 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:26,233 INFO L93 Difference]: Finished difference Result 166344 states and 190371 transitions. [2023-12-19 02:02:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:02:26,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 317 [2023-12-19 02:02:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:26,376 INFO L225 Difference]: With dead ends: 166344 [2023-12-19 02:02:26,377 INFO L226 Difference]: Without dead ends: 89602 [2023-12-19 02:02:26,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:02:26,445 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 389 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:26,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 157 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 02:02:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89602 states. [2023-12-19 02:02:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89602 to 89562. [2023-12-19 02:02:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89562 states, 89561 states have (on average 1.1379060081955314) internal successors, (101912), 89561 states have internal predecessors, (101912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89562 states to 89562 states and 101912 transitions. [2023-12-19 02:02:27,895 INFO L78 Accepts]: Start accepts. Automaton has 89562 states and 101912 transitions. Word has length 317 [2023-12-19 02:02:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:27,895 INFO L495 AbstractCegarLoop]: Abstraction has 89562 states and 101912 transitions. [2023-12-19 02:02:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 89562 states and 101912 transitions. [2023-12-19 02:02:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-19 02:02:27,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:27,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 02:02:27,935 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:27,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash -504622736, now seen corresponding path program 1 times [2023-12-19 02:02:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591258505] [2023-12-19 02:02:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-19 02:02:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591258505] [2023-12-19 02:02:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591258505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503892112] [2023-12-19 02:02:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:28,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:02:28,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 02:02:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:28,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 02:02:28,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-19 02:02:28,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:28,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503892112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:28,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:28,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:28,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090618674] [2023-12-19 02:02:28,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:28,766 INFO L87 Difference]: Start difference. First operand 89562 states and 101912 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:29,998 INFO L93 Difference]: Finished difference Result 169746 states and 192790 transitions. [2023-12-19 02:02:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:29,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2023-12-19 02:02:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:30,147 INFO L225 Difference]: With dead ends: 169746 [2023-12-19 02:02:30,147 INFO L226 Difference]: Without dead ends: 81809 [2023-12-19 02:02:30,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:30,231 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 212 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:30,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 366 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:02:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81809 states. [2023-12-19 02:02:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81809 to 81805. [2023-12-19 02:02:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81805 states, 81804 states have (on average 1.1097501344677523) internal successors, (90782), 81804 states have internal predecessors, (90782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81805 states to 81805 states and 90782 transitions. [2023-12-19 02:02:31,611 INFO L78 Accepts]: Start accepts. Automaton has 81805 states and 90782 transitions. Word has length 326 [2023-12-19 02:02:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:31,612 INFO L495 AbstractCegarLoop]: Abstraction has 81805 states and 90782 transitions. [2023-12-19 02:02:31,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 81805 states and 90782 transitions. [2023-12-19 02:02:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-19 02:02:31,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:31,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:31,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:31,854 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:31,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:31,854 INFO L85 PathProgramCache]: Analyzing trace with hash 351640335, now seen corresponding path program 1 times [2023-12-19 02:02:31,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311455128] [2023-12-19 02:02:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 02:02:32,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311455128] [2023-12-19 02:02:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311455128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:32,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:02:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847247133] [2023-12-19 02:02:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:32,051 INFO L87 Difference]: Start difference. First operand 81805 states and 90782 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:33,272 INFO L93 Difference]: Finished difference Result 196573 states and 218081 transitions. [2023-12-19 02:02:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:33,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 331 [2023-12-19 02:02:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:33,431 INFO L225 Difference]: With dead ends: 196573 [2023-12-19 02:02:33,431 INFO L226 Difference]: Without dead ends: 117611 [2023-12-19 02:02:33,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:33,494 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 221 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:33,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 194 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:02:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117611 states. [2023-12-19 02:02:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117611 to 117603. [2023-12-19 02:02:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117603 states, 117602 states have (on average 1.1057805139368377) internal successors, (130042), 117602 states have internal predecessors, (130042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117603 states to 117603 states and 130042 transitions. [2023-12-19 02:02:35,188 INFO L78 Accepts]: Start accepts. Automaton has 117603 states and 130042 transitions. Word has length 331 [2023-12-19 02:02:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 117603 states and 130042 transitions. [2023-12-19 02:02:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 117603 states and 130042 transitions. [2023-12-19 02:02:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-19 02:02:35,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:35,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:35,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 02:02:35,219 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:35,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 215694304, now seen corresponding path program 1 times [2023-12-19 02:02:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962300650] [2023-12-19 02:02:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-19 02:02:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962300650] [2023-12-19 02:02:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962300650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921996021] [2023-12-19 02:02:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:35,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:35,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:35,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:02:35,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 02:02:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:36,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 02:02:36,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:02:36,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:36,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921996021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:36,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:36,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960210009] [2023-12-19 02:02:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:36,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:36,159 INFO L87 Difference]: Start difference. First operand 117603 states and 130042 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:37,377 INFO L93 Difference]: Finished difference Result 226260 states and 250245 transitions. [2023-12-19 02:02:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 338 [2023-12-19 02:02:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:37,548 INFO L225 Difference]: With dead ends: 226260 [2023-12-19 02:02:37,548 INFO L226 Difference]: Without dead ends: 110282 [2023-12-19 02:02:37,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:37,634 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 146 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:37,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 354 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110282 states. [2023-12-19 02:02:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110282 to 95246. [2023-12-19 02:02:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95246 states, 95245 states have (on average 1.0898314872171768) internal successors, (103801), 95245 states have internal predecessors, (103801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95246 states to 95246 states and 103801 transitions. [2023-12-19 02:02:39,697 INFO L78 Accepts]: Start accepts. Automaton has 95246 states and 103801 transitions. Word has length 338 [2023-12-19 02:02:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:39,697 INFO L495 AbstractCegarLoop]: Abstraction has 95246 states and 103801 transitions. [2023-12-19 02:02:39,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 95246 states and 103801 transitions. [2023-12-19 02:02:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-19 02:02:39,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:39,735 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:39,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:39,941 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:39,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1053241871, now seen corresponding path program 1 times [2023-12-19 02:02:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762449294] [2023-12-19 02:02:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-19 02:02:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:40,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762449294] [2023-12-19 02:02:40,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762449294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:40,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864833999] [2023-12-19 02:02:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:40,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:40,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:40,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:02:40,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 02:02:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:40,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 02:02:40,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 207 proven. 113 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-19 02:02:41,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 02:02:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 207 proven. 113 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-19 02:02:41,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864833999] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 02:02:41,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 02:02:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-19 02:02:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465069739] [2023-12-19 02:02:41,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 02:02:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 02:02:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 02:02:41,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:02:41,264 INFO L87 Difference]: Start difference. First operand 95246 states and 103801 transitions. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:45,147 INFO L93 Difference]: Finished difference Result 321351 states and 351769 transitions. [2023-12-19 02:02:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 02:02:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 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 381 [2023-12-19 02:02:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:45,818 INFO L225 Difference]: With dead ends: 321351 [2023-12-19 02:02:45,819 INFO L226 Difference]: Without dead ends: 229959 [2023-12-19 02:02:45,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-19 02:02:45,996 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 2890 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:45,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 318 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 02:02:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229959 states. [2023-12-19 02:02:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229959 to 225019. [2023-12-19 02:02:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225019 states, 225018 states have (on average 1.0903838804006791) internal successors, (245356), 225018 states have internal predecessors, (245356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225019 states to 225019 states and 245356 transitions. [2023-12-19 02:02:49,581 INFO L78 Accepts]: Start accepts. Automaton has 225019 states and 245356 transitions. Word has length 381 [2023-12-19 02:02:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:49,581 INFO L495 AbstractCegarLoop]: Abstraction has 225019 states and 245356 transitions. [2023-12-19 02:02:49,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 225019 states and 245356 transitions. [2023-12-19 02:02:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-19 02:02:49,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:49,678 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:49,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:49,887 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:49,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1041950040, now seen corresponding path program 1 times [2023-12-19 02:02:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039529656] [2023-12-19 02:02:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-19 02:02:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039529656] [2023-12-19 02:02:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039529656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:02:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135178231] [2023-12-19 02:02:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:50,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:50,144 INFO L87 Difference]: Start difference. First operand 225019 states and 245356 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:52,732 INFO L93 Difference]: Finished difference Result 644509 states and 703370 transitions. [2023-12-19 02:02:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:52,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 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 452 [2023-12-19 02:02:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:53,937 INFO L225 Difference]: With dead ends: 644509 [2023-12-19 02:02:53,938 INFO L226 Difference]: Without dead ends: 428835 [2023-12-19 02:02:54,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:54,527 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 254 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:54,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 789 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 02:02:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428835 states. [2023-12-19 02:03:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428835 to 428819. [2023-12-19 02:03:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428819 states, 428818 states have (on average 1.0907238035716784) internal successors, (467722), 428818 states have internal predecessors, (467722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428819 states to 428819 states and 467722 transitions. [2023-12-19 02:03:02,743 INFO L78 Accepts]: Start accepts. Automaton has 428819 states and 467722 transitions. Word has length 452 [2023-12-19 02:03:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:02,743 INFO L495 AbstractCegarLoop]: Abstraction has 428819 states and 467722 transitions. [2023-12-19 02:03:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 428819 states and 467722 transitions. [2023-12-19 02:03:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-19 02:03:03,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:03,229 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:03:03,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 02:03:03,229 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:03,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1833740347, now seen corresponding path program 1 times [2023-12-19 02:03:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:03,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436755693] [2023-12-19 02:03:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 328 proven. 9 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-19 02:03:03,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436755693] [2023-12-19 02:03:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436755693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848648463] [2023-12-19 02:03:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:03,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:03,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:03,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:03,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 02:03:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:04,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:03:04,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-19 02:03:04,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848648463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:04,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:04,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-19 02:03:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733047969] [2023-12-19 02:03:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:04,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:03:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:03:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:03:04,397 INFO L87 Difference]: Start difference. First operand 428819 states and 467722 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:09,127 INFO L93 Difference]: Finished difference Result 1204701 states and 1316061 transitions. [2023-12-19 02:03:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:03:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 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 465 [2023-12-19 02:03:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:11,048 INFO L225 Difference]: With dead ends: 1204701 [2023-12-19 02:03:11,048 INFO L226 Difference]: Without dead ends: 788071 [2023-12-19 02:03:11,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:03:11,349 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 216 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:11,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 588 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 02:03:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788071 states. [2023-12-19 02:03:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788071 to 788041. [2023-12-19 02:03:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788041 states, 788040 states have (on average 1.0918430536520989) internal successors, (860416), 788040 states have internal predecessors, (860416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788041 states to 788041 states and 860416 transitions. [2023-12-19 02:03:27,612 INFO L78 Accepts]: Start accepts. Automaton has 788041 states and 860416 transitions. Word has length 465 [2023-12-19 02:03:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:27,613 INFO L495 AbstractCegarLoop]: Abstraction has 788041 states and 860416 transitions. [2023-12-19 02:03:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 788041 states and 860416 transitions. [2023-12-19 02:03:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-19 02:03:28,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:28,474 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:03:28,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:28,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 02:03:28,684 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:28,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:28,684 INFO L85 PathProgramCache]: Analyzing trace with hash 582520140, now seen corresponding path program 1 times [2023-12-19 02:03:28,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:28,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437924948] [2023-12-19 02:03:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:28,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-19 02:03:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437924948] [2023-12-19 02:03:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437924948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:29,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:03:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:03:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608353449] [2023-12-19 02:03:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:03:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:03:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:03:29,228 INFO L87 Difference]: Start difference. First operand 788041 states and 860416 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:39,094 INFO L93 Difference]: Finished difference Result 1948599 states and 2129067 transitions. [2023-12-19 02:03:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:03:39,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 517 [2023-12-19 02:03:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:42,263 INFO L225 Difference]: With dead ends: 1948599 [2023-12-19 02:03:42,264 INFO L226 Difference]: Without dead ends: 1175594 [2023-12-19 02:03:43,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:03:43,112 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 395 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:43,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 550 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:03:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175594 states. [2023-12-19 02:04:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175594 to 1139033. [2023-12-19 02:04:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139033 states, 1139032 states have (on average 1.092651479501893) internal successors, (1244565), 1139032 states have internal predecessors, (1244565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:04:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139033 states to 1139033 states and 1244565 transitions. [2023-12-19 02:04:06,221 INFO L78 Accepts]: Start accepts. Automaton has 1139033 states and 1244565 transitions. Word has length 517 [2023-12-19 02:04:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:04:06,221 INFO L495 AbstractCegarLoop]: Abstraction has 1139033 states and 1244565 transitions. [2023-12-19 02:04:06,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:04:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1139033 states and 1244565 transitions. [2023-12-19 02:04:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 02:04:06,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:04:06,513 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:04:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 02:04:06,514 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:04:06,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:04:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1782888263, now seen corresponding path program 1 times [2023-12-19 02:04:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:04:06,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418353052] [2023-12-19 02:04:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:04:06,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:04:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:04:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 317 proven. 6 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-19 02:04:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:04:07,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418353052] [2023-12-19 02:04:07,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418353052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:04:07,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929819189] [2023-12-19 02:04:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:04:07,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:04:07,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:04:07,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:04:07,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process