/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:16:31,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:16:31,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:16:31,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:16:31,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:16:31,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:16:31,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:16:31,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:16:31,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:16:31,657 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:16:31,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:16:31,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:16:31,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:16:31,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:16:31,659 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:16:31,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:16:31,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:16:31,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:16:31,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:16:31,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:16:31,661 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:16:31,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:16:31,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:16:31,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:16:31,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:16:31,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:16:31,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:16:31,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:16:31,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:16:31,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:16:31,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:16:31,664 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:16:31,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:16:31,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:16:31,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:16:31,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:16:31,886 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:16:31,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-16 01:16:32,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:16:33,203 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:16:33,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2023-12-16 01:16:33,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b2d8351/48290129784c4f90bec4383c355d4900/FLAGcdb37e12e [2023-12-16 01:16:33,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b2d8351/48290129784c4f90bec4383c355d4900 [2023-12-16 01:16:33,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:16:33,233 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:16:33,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:16:33,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:16:33,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:16:33,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e82d1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33, skipping insertion in model container [2023-12-16 01:16:33,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:16:33,605 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_label07.c[57439,57452] [2023-12-16 01:16:33,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:16:33,672 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:16:33,792 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_label07.c[57439,57452] [2023-12-16 01:16:33,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:16:33,813 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:16:33,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33 WrapperNode [2023-12-16 01:16:33,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:16:33,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:16:33,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:16:33,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:16:33,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,915 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-16 01:16:33,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:16:33,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:16:33,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:16:33,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:16:33,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,968 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]. [2023-12-16 01:16:33,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:16:34,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:16:34,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:16:34,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:16:34,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:34,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:16:34,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:34,087 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) [2023-12-16 01:16:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:16:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:16:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:16:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:16:34,104 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 [2023-12-16 01:16:34,179 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:16:34,181 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:16:35,508 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:16:35,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:16:35,555 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:16:35,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:16:35 BoogieIcfgContainer [2023-12-16 01:16:35,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:16:35,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:16:35,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:16:35,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:16:35,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:16:33" (1/3) ... [2023-12-16 01:16:35,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69883e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:16:35, skipping insertion in model container [2023-12-16 01:16:35,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:33" (2/3) ... [2023-12-16 01:16:35,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69883e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:16:35, skipping insertion in model container [2023-12-16 01:16:35,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:16:35" (3/3) ... [2023-12-16 01:16:35,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2023-12-16 01:16:35,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:16:35,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:16:35,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:16:35,635 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;@67bc5c9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:16:35,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:16:35,639 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) [2023-12-16 01:16:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-16 01:16:35,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:35,655 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] [2023-12-16 01:16:35,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:35,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1341357854, now seen corresponding path program 1 times [2023-12-16 01:16:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861045130] [2023-12-16 01:16:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861045130] [2023-12-16 01:16:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861045130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:36,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611297338] [2023-12-16 01:16:36,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:16:36,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:16:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:16:36,041 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 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:36,080 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-16 01:16:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:16:36,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-16 01:16:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:36,091 INFO L225 Difference]: With dead ends: 479 [2023-12-16 01:16:36,091 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 01:16:36,093 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 [2023-12-16 01:16:36,095 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 [2023-12-16 01:16:36,096 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] [2023-12-16 01:16:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 01:16:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-16 01:16:36,134 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) [2023-12-16 01:16:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-16 01:16:36,136 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 171 [2023-12-16 01:16:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:36,137 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-16 01:16:36,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-16 01:16:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-16 01:16:36,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:36,139 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] [2023-12-16 01:16:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:16:36,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:36,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1416022641, now seen corresponding path program 1 times [2023-12-16 01:16:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225149220] [2023-12-16 01:16:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225149220] [2023-12-16 01:16:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225149220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:36,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308699829] [2023-12-16 01:16:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:36,585 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:37,287 INFO L93 Difference]: Finished difference Result 704 states and 1166 transitions. [2023-12-16 01:16:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-16 01:16:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:37,290 INFO L225 Difference]: With dead ends: 704 [2023-12-16 01:16:37,290 INFO L226 Difference]: Without dead ends: 467 [2023-12-16 01:16:37,291 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 [2023-12-16 01:16:37,292 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 73 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:37,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 129 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-16 01:16:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2023-12-16 01:16:37,317 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) [2023-12-16 01:16:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2023-12-16 01:16:37,318 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 171 [2023-12-16 01:16:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:37,318 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2023-12-16 01:16:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2023-12-16 01:16:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-16 01:16:37,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:37,321 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] [2023-12-16 01:16:37,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:16:37,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:37,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -74064443, now seen corresponding path program 1 times [2023-12-16 01:16:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401117083] [2023-12-16 01:16:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401117083] [2023-12-16 01:16:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401117083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:37,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359857079] [2023-12-16 01:16:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:37,480 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:38,064 INFO L93 Difference]: Finished difference Result 1329 states and 2168 transitions. [2023-12-16 01:16:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-12-16 01:16:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:38,067 INFO L225 Difference]: With dead ends: 1329 [2023-12-16 01:16:38,067 INFO L226 Difference]: Without dead ends: 877 [2023-12-16 01:16:38,071 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 [2023-12-16 01:16:38,072 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:38,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 161 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-16 01:16:38,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2023-12-16 01:16:38,088 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) [2023-12-16 01:16:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1328 transitions. [2023-12-16 01:16:38,089 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1328 transitions. Word has length 176 [2023-12-16 01:16:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:38,090 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1328 transitions. [2023-12-16 01:16:38,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1328 transitions. [2023-12-16 01:16:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 01:16:38,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:38,093 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] [2023-12-16 01:16:38,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:16:38,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:38,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash 490777518, now seen corresponding path program 1 times [2023-12-16 01:16:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863261540] [2023-12-16 01:16:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:38,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:38,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863261540] [2023-12-16 01:16:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863261540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:38,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526714853] [2023-12-16 01:16:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:38,236 INFO L87 Difference]: Start difference. First operand 873 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:38,836 INFO L93 Difference]: Finished difference Result 2574 states and 3934 transitions. [2023-12-16 01:16:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:38,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-16 01:16:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:38,841 INFO L225 Difference]: With dead ends: 2574 [2023-12-16 01:16:38,841 INFO L226 Difference]: Without dead ends: 1702 [2023-12-16 01:16:38,842 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 [2023-12-16 01:16:38,843 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 [2023-12-16 01:16:38,843 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] [2023-12-16 01:16:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-16 01:16:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1686. [2023-12-16 01:16:38,866 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) [2023-12-16 01:16:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2527 transitions. [2023-12-16 01:16:38,870 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2527 transitions. Word has length 179 [2023-12-16 01:16:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:38,870 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2527 transitions. [2023-12-16 01:16:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2527 transitions. [2023-12-16 01:16:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-16 01:16:38,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:38,874 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] [2023-12-16 01:16:38,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:16:38,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:38,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2038500311, now seen corresponding path program 1 times [2023-12-16 01:16:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105523949] [2023-12-16 01:16:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:39,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:39,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105523949] [2023-12-16 01:16:39,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105523949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:39,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:39,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638302002] [2023-12-16 01:16:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:39,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:39,074 INFO L87 Difference]: Start difference. First operand 1686 states and 2527 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) [2023-12-16 01:16:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:39,628 INFO L93 Difference]: Finished difference Result 4193 states and 6265 transitions. [2023-12-16 01:16:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:39,629 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 [2023-12-16 01:16:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:39,635 INFO L225 Difference]: With dead ends: 4193 [2023-12-16 01:16:39,635 INFO L226 Difference]: Without dead ends: 2508 [2023-12-16 01:16:39,637 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 [2023-12-16 01:16:39,638 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:39,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-16 01:16:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2507. [2023-12-16 01:16:39,668 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) [2023-12-16 01:16:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3677 transitions. [2023-12-16 01:16:39,673 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3677 transitions. Word has length 181 [2023-12-16 01:16:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:39,673 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3677 transitions. [2023-12-16 01:16:39,674 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) [2023-12-16 01:16:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3677 transitions. [2023-12-16 01:16:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-16 01:16:39,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:39,677 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] [2023-12-16 01:16:39,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:16:39,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1654751361, now seen corresponding path program 1 times [2023-12-16 01:16:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719400063] [2023-12-16 01:16:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:39,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:39,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719400063] [2023-12-16 01:16:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719400063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:39,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:39,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:39,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060289774] [2023-12-16 01:16:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:39,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:39,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:39,808 INFO L87 Difference]: Start difference. First operand 2507 states and 3677 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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) [2023-12-16 01:16:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:40,339 INFO L93 Difference]: Finished difference Result 5010 states and 7349 transitions. [2023-12-16 01:16:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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 186 [2023-12-16 01:16:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:40,347 INFO L225 Difference]: With dead ends: 5010 [2023-12-16 01:16:40,348 INFO L226 Difference]: Without dead ends: 2504 [2023-12-16 01:16:40,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:40,353 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 106 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:40,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 383 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2023-12-16 01:16:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2095. [2023-12-16 01:16:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 1.3763132760267431) internal successors, (2882), 2094 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2882 transitions. [2023-12-16 01:16:40,396 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2882 transitions. Word has length 186 [2023-12-16 01:16:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:40,397 INFO L495 AbstractCegarLoop]: Abstraction has 2095 states and 2882 transitions. [2023-12-16 01:16:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 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) [2023-12-16 01:16:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2882 transitions. [2023-12-16 01:16:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-16 01:16:40,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:40,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-12-16 01:16:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:16:40,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1987516346, now seen corresponding path program 1 times [2023-12-16 01:16:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749120483] [2023-12-16 01:16:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:40,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749120483] [2023-12-16 01:16:40,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749120483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:40,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:40,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080586389] [2023-12-16 01:16:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:40,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:40,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:40,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:40,641 INFO L87 Difference]: Start difference. First operand 2095 states and 2882 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) [2023-12-16 01:16:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:41,286 INFO L93 Difference]: Finished difference Result 6220 states and 8561 transitions. [2023-12-16 01:16:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:41,287 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 188 [2023-12-16 01:16:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:41,298 INFO L225 Difference]: With dead ends: 6220 [2023-12-16 01:16:41,298 INFO L226 Difference]: Without dead ends: 4126 [2023-12-16 01:16:41,300 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 [2023-12-16 01:16:41,301 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 210 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:41,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 185 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2023-12-16 01:16:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3516. [2023-12-16 01:16:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3515 states have (on average 1.2623044096728306) internal successors, (4437), 3515 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 4437 transitions. [2023-12-16 01:16:41,353 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 4437 transitions. Word has length 188 [2023-12-16 01:16:41,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:41,353 INFO L495 AbstractCegarLoop]: Abstraction has 3516 states and 4437 transitions. [2023-12-16 01:16:41,353 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) [2023-12-16 01:16:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 4437 transitions. [2023-12-16 01:16:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 01:16:41,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:41,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2023-12-16 01:16:41,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:16:41,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:41,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:41,358 INFO L85 PathProgramCache]: Analyzing trace with hash 144351892, now seen corresponding path program 1 times [2023-12-16 01:16:41,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:41,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499948953] [2023-12-16 01:16:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:41,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:41,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499948953] [2023-12-16 01:16:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499948953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:41,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563212261] [2023-12-16 01:16:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:16:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:16:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:16:41,545 INFO L87 Difference]: Start difference. First operand 3516 states and 4437 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:42,626 INFO L93 Difference]: Finished difference Result 13791 states and 17439 transitions. [2023-12-16 01:16:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:16:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2023-12-16 01:16:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:42,652 INFO L225 Difference]: With dead ends: 13791 [2023-12-16 01:16:42,652 INFO L226 Difference]: Without dead ends: 10276 [2023-12-16 01:16:42,656 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 [2023-12-16 01:16:42,657 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 560 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:42,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 119 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:16:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2023-12-16 01:16:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 10271. [2023-12-16 01:16:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 10270 states have (on average 1.2510223953261927) internal successors, (12848), 10270 states have internal predecessors, (12848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 12848 transitions. [2023-12-16 01:16:42,782 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 12848 transitions. Word has length 198 [2023-12-16 01:16:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 10271 states and 12848 transitions. [2023-12-16 01:16:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 12848 transitions. [2023-12-16 01:16:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-16 01:16:42,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:42,789 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] [2023-12-16 01:16:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:16:42,789 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:42,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 112387349, now seen corresponding path program 1 times [2023-12-16 01:16:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305366464] [2023-12-16 01:16:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:43,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:43,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305366464] [2023-12-16 01:16:43,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305366464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:43,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266974632] [2023-12-16 01:16:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:43,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:43,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:43,091 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) [2023-12-16 01:16:43,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:16:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:43,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:16:43,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 01:16:43,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266974632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:43,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:43,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:16:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109018136] [2023-12-16 01:16:43,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:43,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:43,522 INFO L87 Difference]: Start difference. First operand 10271 states and 12848 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) [2023-12-16 01:16:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:44,269 INFO L93 Difference]: Finished difference Result 30756 states and 38481 transitions. [2023-12-16 01:16:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:44,270 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 273 [2023-12-16 01:16:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:44,312 INFO L225 Difference]: With dead ends: 30756 [2023-12-16 01:16:44,312 INFO L226 Difference]: Without dead ends: 20486 [2023-12-16 01:16:44,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:44,338 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 98 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:44,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 172 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20486 states. [2023-12-16 01:16:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20486 to 19450. [2023-12-16 01:16:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19450 states, 19449 states have (on average 1.2198056455344748) internal successors, (23724), 19449 states have internal predecessors, (23724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 23724 transitions. [2023-12-16 01:16:44,607 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 23724 transitions. Word has length 273 [2023-12-16 01:16:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:44,607 INFO L495 AbstractCegarLoop]: Abstraction has 19450 states and 23724 transitions. [2023-12-16 01:16:44,608 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) [2023-12-16 01:16:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 23724 transitions. [2023-12-16 01:16:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-16 01:16:44,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:44,619 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:44,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:16:44,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:44,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1160109300, now seen corresponding path program 1 times [2023-12-16 01:16:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:44,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222587293] [2023-12-16 01:16:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 01:16:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222587293] [2023-12-16 01:16:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222587293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:44,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570658773] [2023-12-16 01:16:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:44,973 INFO L87 Difference]: Start difference. First operand 19450 states and 23724 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:45,373 INFO L93 Difference]: Finished difference Result 58056 states and 70849 transitions. [2023-12-16 01:16:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:45,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 281 [2023-12-16 01:16:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:45,432 INFO L225 Difference]: With dead ends: 58056 [2023-12-16 01:16:45,432 INFO L226 Difference]: Without dead ends: 38607 [2023-12-16 01:16:45,456 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 [2023-12-16 01:16:45,457 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 269 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:45,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 539 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:16:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38607 states. [2023-12-16 01:16:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38607 to 38605. [2023-12-16 01:16:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38605 states, 38604 states have (on average 1.2201067246917419) internal successors, (47101), 38604 states have internal predecessors, (47101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38605 states to 38605 states and 47101 transitions. [2023-12-16 01:16:45,977 INFO L78 Accepts]: Start accepts. Automaton has 38605 states and 47101 transitions. Word has length 281 [2023-12-16 01:16:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:45,977 INFO L495 AbstractCegarLoop]: Abstraction has 38605 states and 47101 transitions. [2023-12-16 01:16:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38605 states and 47101 transitions. [2023-12-16 01:16:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-16 01:16:45,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:45,994 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:16:45,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:45,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -64281705, now seen corresponding path program 1 times [2023-12-16 01:16:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494955040] [2023-12-16 01:16:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494955040] [2023-12-16 01:16:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494955040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:46,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:46,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965732140] [2023-12-16 01:16:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:46,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:46,144 INFO L87 Difference]: Start difference. First operand 38605 states and 47101 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:47,232 INFO L93 Difference]: Finished difference Result 109101 states and 133126 transitions. [2023-12-16 01:16:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2023-12-16 01:16:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:47,329 INFO L225 Difference]: With dead ends: 109101 [2023-12-16 01:16:47,329 INFO L226 Difference]: Without dead ends: 70497 [2023-12-16 01:16:47,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:47,360 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 269 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:47,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 355 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70497 states. [2023-12-16 01:16:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70497 to 67649. [2023-12-16 01:16:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67649 states, 67648 states have (on average 1.1794583727530747) internal successors, (79788), 67648 states have internal predecessors, (79788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67649 states to 67649 states and 79788 transitions. [2023-12-16 01:16:48,253 INFO L78 Accepts]: Start accepts. Automaton has 67649 states and 79788 transitions. Word has length 282 [2023-12-16 01:16:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:48,253 INFO L495 AbstractCegarLoop]: Abstraction has 67649 states and 79788 transitions. [2023-12-16 01:16:48,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 67649 states and 79788 transitions. [2023-12-16 01:16:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 01:16:48,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:48,273 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:16:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:16:48,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:48,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1294212927, now seen corresponding path program 1 times [2023-12-16 01:16:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691243069] [2023-12-16 01:16:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691243069] [2023-12-16 01:16:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691243069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968261952] [2023-12-16 01:16:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:48,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:48,816 INFO L87 Difference]: Start difference. First operand 67649 states and 79788 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:49,746 INFO L93 Difference]: Finished difference Result 161502 states and 191693 transitions. [2023-12-16 01:16:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 301 [2023-12-16 01:16:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:50,016 INFO L225 Difference]: With dead ends: 161502 [2023-12-16 01:16:50,016 INFO L226 Difference]: Without dead ends: 93854 [2023-12-16 01:16:50,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:50,057 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 98 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:50,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 343 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93854 states. [2023-12-16 01:16:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93854 to 91400. [2023-12-16 01:16:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91400 states, 91399 states have (on average 1.1840720357990788) internal successors, (108223), 91399 states have internal predecessors, (108223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91400 states to 91400 states and 108223 transitions. [2023-12-16 01:16:51,238 INFO L78 Accepts]: Start accepts. Automaton has 91400 states and 108223 transitions. Word has length 301 [2023-12-16 01:16:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 91400 states and 108223 transitions. [2023-12-16 01:16:51,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 91400 states and 108223 transitions. [2023-12-16 01:16:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-16 01:16:51,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:51,263 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:51,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:16:51,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:51,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1616114863, now seen corresponding path program 1 times [2023-12-16 01:16:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962592700] [2023-12-16 01:16:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 01:16:51,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962592700] [2023-12-16 01:16:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962592700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18977510] [2023-12-16 01:16:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:51,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:16:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:16:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:16:51,758 INFO L87 Difference]: Start difference. First operand 91400 states and 108223 transitions. Second operand has 4 states, 4 states have (on average 68.75) 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) [2023-12-16 01:16:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:53,181 INFO L93 Difference]: Finished difference Result 202781 states and 240377 transitions. [2023-12-16 01:16:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:16:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) 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 306 [2023-12-16 01:16:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:53,321 INFO L225 Difference]: With dead ends: 202781 [2023-12-16 01:16:53,321 INFO L226 Difference]: Without dead ends: 111382 [2023-12-16 01:16:53,362 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 [2023-12-16 01:16:53,362 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 361 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:53,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 184 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:16:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111382 states. [2023-12-16 01:16:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111382 to 106860. [2023-12-16 01:16:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106860 states, 106859 states have (on average 1.173892699725807) internal successors, (125441), 106859 states have internal predecessors, (125441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106860 states to 106860 states and 125441 transitions. [2023-12-16 01:16:54,913 INFO L78 Accepts]: Start accepts. Automaton has 106860 states and 125441 transitions. Word has length 306 [2023-12-16 01:16:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:54,913 INFO L495 AbstractCegarLoop]: Abstraction has 106860 states and 125441 transitions. [2023-12-16 01:16:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) 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) [2023-12-16 01:16:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 106860 states and 125441 transitions. [2023-12-16 01:16:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-16 01:16:54,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:54,933 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:54,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:16:54,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash -948600359, now seen corresponding path program 1 times [2023-12-16 01:16:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198993311] [2023-12-16 01:16:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198993311] [2023-12-16 01:16:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198993311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:55,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460630609] [2023-12-16 01:16:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:16:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:16:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:16:55,363 INFO L87 Difference]: Start difference. First operand 106860 states and 125441 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:56,685 INFO L93 Difference]: Finished difference Result 222608 states and 260218 transitions. [2023-12-16 01:16:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:16:56,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 [2023-12-16 01:16:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:56,838 INFO L225 Difference]: With dead ends: 222608 [2023-12-16 01:16:56,838 INFO L226 Difference]: Without dead ends: 115749 [2023-12-16 01:16:56,892 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 [2023-12-16 01:16:56,893 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 477 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:56,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 51 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115749 states. [2023-12-16 01:16:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115749 to 113674. [2023-12-16 01:16:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113674 states, 113673 states have (on average 1.1489271858752739) internal successors, (130602), 113673 states have internal predecessors, (130602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113674 states to 113674 states and 130602 transitions. [2023-12-16 01:16:58,631 INFO L78 Accepts]: Start accepts. Automaton has 113674 states and 130602 transitions. Word has length 311 [2023-12-16 01:16:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 113674 states and 130602 transitions. [2023-12-16 01:16:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 113674 states and 130602 transitions. [2023-12-16 01:16:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 01:16:58,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:58,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:58,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:16:58,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:58,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1648314811, now seen corresponding path program 1 times [2023-12-16 01:16:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:58,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070230768] [2023-12-16 01:16:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 01:16:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070230768] [2023-12-16 01:16:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070230768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525460094] [2023-12-16 01:16:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:59,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:59,107 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) [2023-12-16 01:16:59,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:16:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:59,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:16:59,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 01:16:59,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525460094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:16:59,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090619826] [2023-12-16 01:16:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:59,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:59,438 INFO L87 Difference]: Start difference. First operand 113674 states and 130602 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:00,535 INFO L93 Difference]: Finished difference Result 230227 states and 264575 transitions. [2023-12-16 01:17:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 322 [2023-12-16 01:17:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:00,698 INFO L225 Difference]: With dead ends: 230227 [2023-12-16 01:17:00,698 INFO L226 Difference]: Without dead ends: 116554 [2023-12-16 01:17:00,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:00,774 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 52 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:00,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 328 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116554 states. [2023-12-16 01:17:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116554 to 114892. [2023-12-16 01:17:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114892 states, 114891 states have (on average 1.1443890296019705) internal successors, (131480), 114891 states have internal predecessors, (131480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114892 states to 114892 states and 131480 transitions. [2023-12-16 01:17:02,623 INFO L78 Accepts]: Start accepts. Automaton has 114892 states and 131480 transitions. Word has length 322 [2023-12-16 01:17:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:02,624 INFO L495 AbstractCegarLoop]: Abstraction has 114892 states and 131480 transitions. [2023-12-16 01:17:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 114892 states and 131480 transitions. [2023-12-16 01:17:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-16 01:17:02,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:02,839 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:17:02,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:03,044 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,SelfDestructingSolverStorable14 [2023-12-16 01:17:03,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:03,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash -129043089, now seen corresponding path program 1 times [2023-12-16 01:17:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227370241] [2023-12-16 01:17:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 01:17:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227370241] [2023-12-16 01:17:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227370241] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640612286] [2023-12-16 01:17:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:03,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:03,468 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) [2023-12-16 01:17:03,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:17:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:03,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:17:03,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 01:17:03,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:03,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640612286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:03,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-16 01:17:03,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433879791] [2023-12-16 01:17:03,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:03,923 INFO L87 Difference]: Start difference. First operand 114892 states and 131480 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:05,105 INFO L93 Difference]: Finished difference Result 262919 states and 300468 transitions. [2023-12-16 01:17:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 325 [2023-12-16 01:17:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:05,293 INFO L225 Difference]: With dead ends: 262919 [2023-12-16 01:17:05,293 INFO L226 Difference]: Without dead ends: 148028 [2023-12-16 01:17:05,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:05,552 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 105 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:05,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 144 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148028 states. [2023-12-16 01:17:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148028 to 136443. [2023-12-16 01:17:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136443 states, 136442 states have (on average 1.147952976356254) internal successors, (156629), 136442 states have internal predecessors, (156629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136443 states to 136443 states and 156629 transitions. [2023-12-16 01:17:07,366 INFO L78 Accepts]: Start accepts. Automaton has 136443 states and 156629 transitions. Word has length 325 [2023-12-16 01:17:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:07,367 INFO L495 AbstractCegarLoop]: Abstraction has 136443 states and 156629 transitions. [2023-12-16 01:17:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 136443 states and 156629 transitions. [2023-12-16 01:17:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-16 01:17:07,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:07,396 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:07,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:07,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:07,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash 585039581, now seen corresponding path program 1 times [2023-12-16 01:17:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551843006] [2023-12-16 01:17:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 172 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 01:17:08,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:08,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551843006] [2023-12-16 01:17:08,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551843006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:08,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462555832] [2023-12-16 01:17:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:08,191 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) [2023-12-16 01:17:08,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 01:17:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:08,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:08,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 01:17:08,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462555832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:08,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:08,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:08,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096074490] [2023-12-16 01:17:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:08,512 INFO L87 Difference]: Start difference. First operand 136443 states and 156629 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) [2023-12-16 01:17:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:09,768 INFO L93 Difference]: Finished difference Result 269852 states and 309874 transitions. [2023-12-16 01:17:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:09,769 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 332 [2023-12-16 01:17:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:09,977 INFO L225 Difference]: With dead ends: 269852 [2023-12-16 01:17:09,977 INFO L226 Difference]: Without dead ends: 133410 [2023-12-16 01:17:10,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:10,041 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:10,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 94 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133410 states. [2023-12-16 01:17:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133410 to 131165. [2023-12-16 01:17:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131165 states, 131164 states have (on average 1.1274892500991125) internal successors, (147886), 131164 states have internal predecessors, (147886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131165 states to 131165 states and 147886 transitions. [2023-12-16 01:17:11,895 INFO L78 Accepts]: Start accepts. Automaton has 131165 states and 147886 transitions. Word has length 332 [2023-12-16 01:17:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:11,895 INFO L495 AbstractCegarLoop]: Abstraction has 131165 states and 147886 transitions. [2023-12-16 01:17:11,895 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) [2023-12-16 01:17:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 131165 states and 147886 transitions. [2023-12-16 01:17:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-16 01:17:11,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:11,918 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:11,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 01:17:12,124 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:12,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1185844008, now seen corresponding path program 1 times [2023-12-16 01:17:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:12,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729135620] [2023-12-16 01:17:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 183 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 01:17:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729135620] [2023-12-16 01:17:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729135620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246518604] [2023-12-16 01:17:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:12,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:12,780 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) [2023-12-16 01:17:12,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 01:17:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:12,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 01:17:12,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 01:17:13,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246518604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:13,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:13,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623880783] [2023-12-16 01:17:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:13,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:17:13,938 INFO L87 Difference]: Start difference. First operand 131165 states and 147886 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:15,791 INFO L93 Difference]: Finished difference Result 377692 states and 423946 transitions. [2023-12-16 01:17:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 357 [2023-12-16 01:17:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:16,140 INFO L225 Difference]: With dead ends: 377692 [2023-12-16 01:17:16,141 INFO L226 Difference]: Without dead ends: 246528 [2023-12-16 01:17:16,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:17:16,199 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 421 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:16,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 263 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246528 states. [2023-12-16 01:17:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246528 to 238794. [2023-12-16 01:17:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238794 states, 238793 states have (on average 1.1203301604318385) internal successors, (267527), 238793 states have internal predecessors, (267527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238794 states to 238794 states and 267527 transitions. [2023-12-16 01:17:19,732 INFO L78 Accepts]: Start accepts. Automaton has 238794 states and 267527 transitions. Word has length 357 [2023-12-16 01:17:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:19,732 INFO L495 AbstractCegarLoop]: Abstraction has 238794 states and 267527 transitions. [2023-12-16 01:17:19,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 238794 states and 267527 transitions. [2023-12-16 01:17:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-16 01:17:19,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:19,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:17:19,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:19,970 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,SelfDestructingSolverStorable17 [2023-12-16 01:17:19,972 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1681510081, now seen corresponding path program 1 times [2023-12-16 01:17:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952783694] [2023-12-16 01:17:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-16 01:17:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952783694] [2023-12-16 01:17:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952783694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:20,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812849923] [2023-12-16 01:17:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:20,447 INFO L87 Difference]: Start difference. First operand 238794 states and 267527 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:22,830 INFO L93 Difference]: Finished difference Result 580656 states and 647918 transitions. [2023-12-16 01:17:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 401 [2023-12-16 01:17:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:23,718 INFO L225 Difference]: With dead ends: 580656 [2023-12-16 01:17:23,718 INFO L226 Difference]: Without dead ends: 341863 [2023-12-16 01:17:23,871 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 [2023-12-16 01:17:23,872 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 462 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:23,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 429 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341863 states. [2023-12-16 01:17:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341863 to 328023. [2023-12-16 01:17:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328023 states, 328022 states have (on average 1.1134222704574692) internal successors, (365227), 328022 states have internal predecessors, (365227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328023 states to 328023 states and 365227 transitions. [2023-12-16 01:17:28,575 INFO L78 Accepts]: Start accepts. Automaton has 328023 states and 365227 transitions. Word has length 401 [2023-12-16 01:17:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:28,576 INFO L495 AbstractCegarLoop]: Abstraction has 328023 states and 365227 transitions. [2023-12-16 01:17:28,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 328023 states and 365227 transitions. [2023-12-16 01:17:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-16 01:17:28,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:28,923 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:17:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:17:28,923 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:28,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1926710494, now seen corresponding path program 1 times [2023-12-16 01:17:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:28,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769986111] [2023-12-16 01:17:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 01:17:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:29,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:17:29,019 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.colorLiterals(Interpolator.java:798) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:236) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 01:17:29,022 INFO L158 Benchmark]: Toolchain (without parser) took 55788.35ms. Allocated memory was 272.6MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 213.8MB in the beginning and 6.0GB in the end (delta: -5.7GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 01:17:29,022 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:17:29,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.06ms. Allocated memory is still 272.6MB. Free memory was 213.5MB in the beginning and 209.3MB in the end (delta: 4.3MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-12-16 01:17:29,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.51ms. Allocated memory is still 272.6MB. Free memory was 209.3MB in the beginning and 194.1MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 01:17:29,022 INFO L158 Benchmark]: Boogie Preprocessor took 144.73ms. Allocated memory is still 272.6MB. Free memory was 194.1MB in the beginning and 181.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 01:17:29,023 INFO L158 Benchmark]: RCFGBuilder took 1493.16ms. Allocated memory is still 272.6MB. Free memory was 181.3MB in the beginning and 179.1MB in the end (delta: 2.2MB). Peak memory consumption was 93.1MB. Max. memory is 8.0GB. [2023-12-16 01:17:29,023 INFO L158 Benchmark]: TraceAbstraction took 53465.16ms. Allocated memory was 272.6MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 178.6MB in the beginning and 6.0GB in the end (delta: -5.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 01:17:29,024 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 579.06ms. Allocated memory is still 272.6MB. Free memory was 213.5MB in the beginning and 209.3MB in the end (delta: 4.3MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 100.51ms. Allocated memory is still 272.6MB. Free memory was 209.3MB in the beginning and 194.1MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 144.73ms. Allocated memory is still 272.6MB. Free memory was 194.1MB in the beginning and 181.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1493.16ms. Allocated memory is still 272.6MB. Free memory was 181.3MB in the beginning and 179.1MB in the end (delta: 2.2MB). Peak memory consumption was 93.1MB. Max. memory is 8.0GB. * TraceAbstraction took 53465.16ms. Allocated memory was 272.6MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 178.6MB in the beginning and 6.0GB in the end (delta: -5.8GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.colorLiterals(Interpolator.java:798) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown