/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:16:31,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:16:31,904 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 01:16:31,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:16:31,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:16:31,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:16:31,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:16:31,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:16:31,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:16:31,933 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:16:31,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:16:31,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:16:31,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:16:31,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:16:31,935 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:16:31,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:16:31,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:16:31,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:16:31,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:16:31,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:16:31,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:16:31,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:16:31,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:16:31,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:16:31,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:16:31,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:16:31,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:16:31,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:16:31,940 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:16:31,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:16:31,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:16:31,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:16:32,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:16:32,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:16:32,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:16:32,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:16:32,150 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:16:32,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label08.c [2023-12-16 01:16:33,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:16:33,423 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:16:33,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label08.c [2023-12-16 01:16:33,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e992954e/d342f7937df244adbd0e296348a59883/FLAG53a65e450 [2023-12-16 01:16:33,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e992954e/d342f7937df244adbd0e296348a59883 [2023-12-16 01:16:33,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:16:33,455 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:16:33,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:16:33,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:16:33,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:16:33,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f03138a 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 01:16:33,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:16:33" (1/1) ... [2023-12-16 01:16:33,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:16:33,848 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_label08.c[55410,55423] [2023-12-16 01:16:33,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:16:33,887 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:16:34,021 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_label08.c[55410,55423] [2023-12-16 01:16:34,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:16:34,046 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:16:34,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34 WrapperNode [2023-12-16 01:16:34,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:16:34,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:16:34,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:16:34,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:16:34,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,144 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-16 01:16:34,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:16:34,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:16:34,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:16:34,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:16:34,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,193 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 01:16:34,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:16:34,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:16:34,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:16:34,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:16:34,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (1/1) ... [2023-12-16 01:16:34,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:16:34,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:34,284 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 01:16:34,308 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 01:16:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:16:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:16:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:16:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:16:34,392 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:16:34,394 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:16:35,634 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:16:35,679 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:16:35,679 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:16:35,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:16:35 BoogieIcfgContainer [2023-12-16 01:16:35,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:16:35,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:16:35,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:16:35,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:16:35,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:16:33" (1/3) ... [2023-12-16 01:16:35,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024ec96 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 01:16:35,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:16:34" (2/3) ... [2023-12-16 01:16:35,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024ec96 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 01:16:35,684 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 01:16:35,685 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label08.c [2023-12-16 01:16:35,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:16:35,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:16:35,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:16:35,744 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;@1ac2bb17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:16:35,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:16:35,749 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 01:16:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 01:16:35,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:35,761 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] [2023-12-16 01:16:35,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:35,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 508503873, now seen corresponding path program 1 times [2023-12-16 01:16:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888078220] [2023-12-16 01:16:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:36,147 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 01:16:36,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888078220] [2023-12-16 01:16:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888078220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:36,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:36,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747132269] [2023-12-16 01:16:36,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:16:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:16:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:16:36,186 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 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 01:16:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:36,243 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-16 01:16:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:16:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-16 01:16:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:36,258 INFO L225 Difference]: With dead ends: 479 [2023-12-16 01:16:36,258 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 01:16:36,261 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 01:16:36,264 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 01:16:36,265 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 01:16:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 01:16:36,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-16 01:16:36,306 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 01:16:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-16 01:16:36,310 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 156 [2023-12-16 01:16:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:36,313 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-16 01:16:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 01:16:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-16 01:16:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 01:16:36,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:36,316 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] [2023-12-16 01:16:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:16:36,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:36,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2020038930, now seen corresponding path program 1 times [2023-12-16 01:16:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211293286] [2023-12-16 01:16:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:36,717 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 01:16:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211293286] [2023-12-16 01:16:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211293286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:36,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638731156] [2023-12-16 01:16:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:36,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:36,721 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 01:16:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:37,393 INFO L93 Difference]: Finished difference Result 686 states and 1135 transitions. [2023-12-16 01:16:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-16 01:16:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:37,395 INFO L225 Difference]: With dead ends: 686 [2023-12-16 01:16:37,395 INFO L226 Difference]: Without dead ends: 449 [2023-12-16 01:16:37,396 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 01:16:37,397 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 121 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:37,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 90 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-16 01:16:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-16 01:16:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.6233183856502242) internal successors, (724), 446 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 01:16:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 724 transitions. [2023-12-16 01:16:37,412 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 724 transitions. Word has length 156 [2023-12-16 01:16:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:37,413 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 724 transitions. [2023-12-16 01:16:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 01:16:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 724 transitions. [2023-12-16 01:16:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-16 01:16:37,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:37,414 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] [2023-12-16 01:16:37,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:16:37,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:37,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 860051832, now seen corresponding path program 1 times [2023-12-16 01:16:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:37,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180623932] [2023-12-16 01:16:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:37,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:37,595 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 01:16:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180623932] [2023-12-16 01:16:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180623932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825860065] [2023-12-16 01:16:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:37,603 INFO L87 Difference]: Start difference. First operand 447 states and 724 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:16:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:38,166 INFO L93 Difference]: Finished difference Result 1317 states and 2138 transitions. [2023-12-16 01:16:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:38,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-16 01:16:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:38,170 INFO L225 Difference]: With dead ends: 1317 [2023-12-16 01:16:38,170 INFO L226 Difference]: Without dead ends: 871 [2023-12-16 01:16:38,171 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 01:16:38,172 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:38,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 156 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-16 01:16:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 867. [2023-12-16 01:16:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 1.5277136258660509) internal successors, (1323), 866 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 01:16:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1323 transitions. [2023-12-16 01:16:38,188 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1323 transitions. Word has length 161 [2023-12-16 01:16:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:38,188 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1323 transitions. [2023-12-16 01:16:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:16:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1323 transitions. [2023-12-16 01:16:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 01:16:38,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:38,190 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] [2023-12-16 01:16:38,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:16:38,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:38,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1284347567, now seen corresponding path program 1 times [2023-12-16 01:16:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011566692] [2023-12-16 01:16:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:38,291 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 01:16:38,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011566692] [2023-12-16 01:16:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011566692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:38,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:38,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:38,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808682424] [2023-12-16 01:16:38,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:38,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:38,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:38,293 INFO L87 Difference]: Start difference. First operand 867 states and 1323 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 01:16:38,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:38,913 INFO L93 Difference]: Finished difference Result 2565 states and 3930 transitions. [2023-12-16 01:16:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:38,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2023-12-16 01:16:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:38,918 INFO L225 Difference]: With dead ends: 2565 [2023-12-16 01:16:38,918 INFO L226 Difference]: Without dead ends: 1699 [2023-12-16 01:16:38,919 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 01:16:38,920 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 01:16:38,920 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 01:16:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-16 01:16:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1683. [2023-12-16 01:16:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.4982164090368608) internal successors, (2520), 1682 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 01:16:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2520 transitions. [2023-12-16 01:16:38,942 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2520 transitions. Word has length 164 [2023-12-16 01:16:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2520 transitions. [2023-12-16 01:16:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 01:16:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2520 transitions. [2023-12-16 01:16:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-16 01:16:38,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:38,945 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] [2023-12-16 01:16:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:16:38,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:38,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash -679164012, now seen corresponding path program 1 times [2023-12-16 01:16:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235816521] [2023-12-16 01:16:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:39,150 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 01:16:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235816521] [2023-12-16 01:16:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235816521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:39,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845812975] [2023-12-16 01:16:39,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:39,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:39,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:39,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:39,152 INFO L87 Difference]: Start difference. First operand 1683 states and 2520 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 01:16:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:39,786 INFO L93 Difference]: Finished difference Result 4187 states and 6246 transitions. [2023-12-16 01:16:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2023-12-16 01:16:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:39,793 INFO L225 Difference]: With dead ends: 4187 [2023-12-16 01:16:39,793 INFO L226 Difference]: Without dead ends: 2505 [2023-12-16 01:16:39,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:39,796 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:39,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-12-16 01:16:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2504. [2023-12-16 01:16:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.4702357171394327) internal successors, (3680), 2503 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states 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 01:16:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3680 transitions. [2023-12-16 01:16:39,823 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3680 transitions. Word has length 166 [2023-12-16 01:16:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:39,823 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 3680 transitions. [2023-12-16 01:16:39,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 01:16:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3680 transitions. [2023-12-16 01:16:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-16 01:16:39,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:39,826 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] [2023-12-16 01:16:39,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:16:39,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:39,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 445037310, now seen corresponding path program 1 times [2023-12-16 01:16:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:39,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989413064] [2023-12-16 01:16:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:39,995 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 01:16:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989413064] [2023-12-16 01:16:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989413064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:39,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:39,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870878079] [2023-12-16 01:16:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:39,997 INFO L87 Difference]: Start difference. First operand 2504 states and 3680 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 01:16:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:40,550 INFO L93 Difference]: Finished difference Result 5006 states and 7358 transitions. [2023-12-16 01:16:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:16:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:40,557 INFO L225 Difference]: With dead ends: 5006 [2023-12-16 01:16:40,558 INFO L226 Difference]: Without dead ends: 2503 [2023-12-16 01:16:40,561 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 01:16:40,562 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 121 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:40,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 376 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2023-12-16 01:16:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2501. [2023-12-16 01:16:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 2500 states have (on average 1.3664) internal successors, (3416), 2500 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states 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 01:16:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3416 transitions. [2023-12-16 01:16:40,593 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3416 transitions. Word has length 171 [2023-12-16 01:16:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 3416 transitions. [2023-12-16 01:16:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 01:16:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3416 transitions. [2023-12-16 01:16:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-16 01:16:40,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:40,597 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] [2023-12-16 01:16:40,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:16:40,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:40,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash 197530659, now seen corresponding path program 1 times [2023-12-16 01:16:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:40,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117742731] [2023-12-16 01:16:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:40,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:40,812 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 01:16:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117742731] [2023-12-16 01:16:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117742731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567977464] [2023-12-16 01:16:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:40,815 INFO L87 Difference]: Start difference. First operand 2501 states and 3416 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 01:16:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:41,448 INFO L93 Difference]: Finished difference Result 7438 states and 10164 transitions. [2023-12-16 01:16:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-16 01:16:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:41,460 INFO L225 Difference]: With dead ends: 7438 [2023-12-16 01:16:41,460 INFO L226 Difference]: Without dead ends: 4938 [2023-12-16 01:16:41,464 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 01:16:41,464 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 01:16:41,464 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 01:16:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2023-12-16 01:16:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4125. [2023-12-16 01:16:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 1.2580019398642095) internal successors, (5188), 4124 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states 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 01:16:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 5188 transitions. [2023-12-16 01:16:41,515 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 5188 transitions. Word has length 173 [2023-12-16 01:16:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:41,515 INFO L495 AbstractCegarLoop]: Abstraction has 4125 states and 5188 transitions. [2023-12-16 01:16:41,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 01:16:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 5188 transitions. [2023-12-16 01:16:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-16 01:16:41,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:41,519 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] [2023-12-16 01:16:41,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:16:41,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:41,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash 480080009, now seen corresponding path program 1 times [2023-12-16 01:16:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:41,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370897539] [2023-12-16 01:16:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:41,716 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 01:16:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370897539] [2023-12-16 01:16:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370897539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240348856] [2023-12-16 01:16:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:16:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:16:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:16:41,718 INFO L87 Difference]: Start difference. First operand 4125 states and 5188 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:42,786 INFO L93 Difference]: Finished difference Result 16224 states and 20442 transitions. [2023-12-16 01:16:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:16:42,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-16 01:16:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:42,817 INFO L225 Difference]: With dead ends: 16224 [2023-12-16 01:16:42,817 INFO L226 Difference]: Without dead ends: 12100 [2023-12-16 01:16:42,824 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 01:16:42,824 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 888 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:42,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 111 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:16:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12100 states. [2023-12-16 01:16:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12100 to 12096. [2023-12-16 01:16:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12096 states, 12095 states have (on average 1.2502687060768913) internal successors, (15122), 12095 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states 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 01:16:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12096 states to 12096 states and 15122 transitions. [2023-12-16 01:16:42,999 INFO L78 Accepts]: Start accepts. Automaton has 12096 states and 15122 transitions. Word has length 183 [2023-12-16 01:16:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 12096 states and 15122 transitions. [2023-12-16 01:16:43,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12096 states and 15122 transitions. [2023-12-16 01:16:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-16 01:16:43,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:43,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:16:43,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 856437479, now seen corresponding path program 1 times [2023-12-16 01:16:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286852376] [2023-12-16 01:16:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286852376] [2023-12-16 01:16:43,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286852376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560641051] [2023-12-16 01:16:43,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:43,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:43,324 INFO L87 Difference]: Start difference. First operand 12096 states and 15122 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 01:16:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:44,034 INFO L93 Difference]: Finished difference Result 31524 states and 39382 transitions. [2023-12-16 01:16:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 205 [2023-12-16 01:16:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:44,071 INFO L225 Difference]: With dead ends: 31524 [2023-12-16 01:16:44,071 INFO L226 Difference]: Without dead ends: 19429 [2023-12-16 01:16:44,086 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 01:16:44,087 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 193 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:44,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 379 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19429 states. [2023-12-16 01:16:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19429 to 18186. [2023-12-16 01:16:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18186 states, 18185 states have (on average 1.2152323343414901) internal successors, (22099), 18185 states have internal predecessors, (22099), 0 states have call successors, (0), 0 states 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 01:16:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18186 states to 18186 states and 22099 transitions. [2023-12-16 01:16:44,373 INFO L78 Accepts]: Start accepts. Automaton has 18186 states and 22099 transitions. Word has length 205 [2023-12-16 01:16:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:44,373 INFO L495 AbstractCegarLoop]: Abstraction has 18186 states and 22099 transitions. [2023-12-16 01:16:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 01:16:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18186 states and 22099 transitions. [2023-12-16 01:16:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-16 01:16:44,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:44,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:16:44,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:16:44,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:44,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1996331714, now seen corresponding path program 1 times [2023-12-16 01:16:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010831421] [2023-12-16 01:16:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:16:44,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:44,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010831421] [2023-12-16 01:16:44,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010831421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:44,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:44,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814030286] [2023-12-16 01:16:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:44,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:16:44,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:16:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:16:44,660 INFO L87 Difference]: Start difference. First operand 18186 states and 22099 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 01:16:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:45,724 INFO L93 Difference]: Finished difference Result 38844 states and 47350 transitions. [2023-12-16 01:16:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:16:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2023-12-16 01:16:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:45,768 INFO L225 Difference]: With dead ends: 38844 [2023-12-16 01:16:45,769 INFO L226 Difference]: Without dead ends: 20659 [2023-12-16 01:16:45,786 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 01:16:45,787 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 391 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:45,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 172 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:16:45,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20659 states. [2023-12-16 01:16:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20659 to 17780. [2023-12-16 01:16:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17780 states, 17779 states have (on average 1.2131728443669498) internal successors, (21569), 17779 states have internal predecessors, (21569), 0 states have call successors, (0), 0 states 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 01:16:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17780 states to 17780 states and 21569 transitions. [2023-12-16 01:16:46,125 INFO L78 Accepts]: Start accepts. Automaton has 17780 states and 21569 transitions. Word has length 221 [2023-12-16 01:16:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:46,125 INFO L495 AbstractCegarLoop]: Abstraction has 17780 states and 21569 transitions. [2023-12-16 01:16:46,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 01:16:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 17780 states and 21569 transitions. [2023-12-16 01:16:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-16 01:16:46,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:46,132 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, 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] [2023-12-16 01:16:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:16:46,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:46,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1685120685, now seen corresponding path program 1 times [2023-12-16 01:16:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252698565] [2023-12-16 01:16:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:16:46,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252698565] [2023-12-16 01:16:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252698565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439164080] [2023-12-16 01:16:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:46,398 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 01:16:46,404 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 01:16:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:46,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:16:46,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:46,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:46,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439164080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:46,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:46,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:16:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123870785] [2023-12-16 01:16:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:46,633 INFO L87 Difference]: Start difference. First operand 17780 states and 21569 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 01:16:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:47,367 INFO L93 Difference]: Finished difference Result 47360 states and 57199 transitions. [2023-12-16 01:16:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 228 [2023-12-16 01:16:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:47,410 INFO L225 Difference]: With dead ends: 47360 [2023-12-16 01:16:47,411 INFO L226 Difference]: Without dead ends: 29581 [2023-12-16 01:16:47,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 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 01:16:47,432 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 208 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:47,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 408 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29581 states. [2023-12-16 01:16:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29581 to 28551. [2023-12-16 01:16:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28551 states, 28550 states have (on average 1.1869352014010508) internal successors, (33887), 28550 states have internal predecessors, (33887), 0 states have call successors, (0), 0 states 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 01:16:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28551 states to 28551 states and 33887 transitions. [2023-12-16 01:16:47,745 INFO L78 Accepts]: Start accepts. Automaton has 28551 states and 33887 transitions. Word has length 228 [2023-12-16 01:16:47,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:47,746 INFO L495 AbstractCegarLoop]: Abstraction has 28551 states and 33887 transitions. [2023-12-16 01:16:47,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 01:16:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28551 states and 33887 transitions. [2023-12-16 01:16:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-16 01:16:47,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:47,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:47,767 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 01:16:47,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 01:16:47,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:47,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1635143633, now seen corresponding path program 1 times [2023-12-16 01:16:47,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:47,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216672177] [2023-12-16 01:16:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:47,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-16 01:16:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216672177] [2023-12-16 01:16:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216672177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:48,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016180454] [2023-12-16 01:16:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:48,303 INFO L87 Difference]: Start difference. First operand 28551 states and 33887 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:49,078 INFO L93 Difference]: Finished difference Result 62600 states and 74144 transitions. [2023-12-16 01:16:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:49,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2023-12-16 01:16:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:49,122 INFO L225 Difference]: With dead ends: 62600 [2023-12-16 01:16:49,122 INFO L226 Difference]: Without dead ends: 34050 [2023-12-16 01:16:49,136 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 01:16:49,137 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 200 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 186 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34050 states. [2023-12-16 01:16:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34050 to 34034. [2023-12-16 01:16:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34034 states, 34033 states have (on average 1.1810301765933064) internal successors, (40194), 34033 states have internal predecessors, (40194), 0 states have call successors, (0), 0 states 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 01:16:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34034 states to 34034 states and 40194 transitions. [2023-12-16 01:16:49,567 INFO L78 Accepts]: Start accepts. Automaton has 34034 states and 40194 transitions. Word has length 240 [2023-12-16 01:16:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:49,568 INFO L495 AbstractCegarLoop]: Abstraction has 34034 states and 40194 transitions. [2023-12-16 01:16:49,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:16:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 34034 states and 40194 transitions. [2023-12-16 01:16:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-16 01:16:49,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:49,585 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:16:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:16:49,585 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:49,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1899808268, now seen corresponding path program 1 times [2023-12-16 01:16:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989669297] [2023-12-16 01:16:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:49,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-16 01:16:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989669297] [2023-12-16 01:16:50,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989669297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297539886] [2023-12-16 01:16:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:50,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:50,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:50,018 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 01:16:50,044 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 01:16:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:50,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:16:50,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 01:16:50,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297539886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:50,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:50,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:16:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955882653] [2023-12-16 01:16:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:50,387 INFO L87 Difference]: Start difference. First operand 34034 states and 40194 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 01:16:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:51,071 INFO L93 Difference]: Finished difference Result 69097 states and 81461 transitions. [2023-12-16 01:16:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 248 [2023-12-16 01:16:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:51,115 INFO L225 Difference]: With dead ends: 69097 [2023-12-16 01:16:51,115 INFO L226 Difference]: Without dead ends: 35064 [2023-12-16 01:16:51,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 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 01:16:51,139 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 114 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:51,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 125 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35064 states. [2023-12-16 01:16:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35064 to 32613. [2023-12-16 01:16:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32613 states, 32612 states have (on average 1.1466944682938796) internal successors, (37396), 32612 states have internal predecessors, (37396), 0 states have call successors, (0), 0 states 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 01:16:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32613 states to 32613 states and 37396 transitions. [2023-12-16 01:16:51,573 INFO L78 Accepts]: Start accepts. Automaton has 32613 states and 37396 transitions. Word has length 248 [2023-12-16 01:16:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:51,574 INFO L495 AbstractCegarLoop]: Abstraction has 32613 states and 37396 transitions. [2023-12-16 01:16:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 01:16:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32613 states and 37396 transitions. [2023-12-16 01:16:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-16 01:16:51,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:51,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:51,592 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 01:16:51,790 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,SelfDestructingSolverStorable12 [2023-12-16 01:16:51,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:51,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1009129412, now seen corresponding path program 1 times [2023-12-16 01:16:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615398239] [2023-12-16 01:16:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:16:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615398239] [2023-12-16 01:16:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615398239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:52,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:52,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:16:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801233777] [2023-12-16 01:16:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:52,169 INFO L87 Difference]: Start difference. First operand 32613 states and 37396 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 01:16:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:52,967 INFO L93 Difference]: Finished difference Result 70933 states and 81424 transitions. [2023-12-16 01:16:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 249 [2023-12-16 01:16:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:53,002 INFO L225 Difference]: With dead ends: 70933 [2023-12-16 01:16:53,003 INFO L226 Difference]: Without dead ends: 36900 [2023-12-16 01:16:53,022 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 01:16:53,022 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 142 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:53,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 403 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36900 states. [2023-12-16 01:16:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36900 to 30191. [2023-12-16 01:16:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30191 states, 30190 states have (on average 1.1096389532957933) internal successors, (33500), 30190 states have internal predecessors, (33500), 0 states have call successors, (0), 0 states 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 01:16:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30191 states to 30191 states and 33500 transitions. [2023-12-16 01:16:53,440 INFO L78 Accepts]: Start accepts. Automaton has 30191 states and 33500 transitions. Word has length 249 [2023-12-16 01:16:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:53,441 INFO L495 AbstractCegarLoop]: Abstraction has 30191 states and 33500 transitions. [2023-12-16 01:16:53,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 01:16:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 30191 states and 33500 transitions. [2023-12-16 01:16:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-16 01:16:53,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:53,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:53,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:16:53,450 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:53,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -375318906, now seen corresponding path program 1 times [2023-12-16 01:16:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990218544] [2023-12-16 01:16:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:53,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 01:16:53,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990218544] [2023-12-16 01:16:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990218544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:16:53,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:16:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99740283] [2023-12-16 01:16:53,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:53,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:53,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:16:53,701 INFO L87 Difference]: Start difference. First operand 30191 states and 33500 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:16:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:54,373 INFO L93 Difference]: Finished difference Result 78740 states and 87458 transitions. [2023-12-16 01:16:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 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 262 [2023-12-16 01:16:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:54,503 INFO L225 Difference]: With dead ends: 78740 [2023-12-16 01:16:54,503 INFO L226 Difference]: Without dead ends: 48550 [2023-12-16 01:16:54,516 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 01:16:54,516 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 211 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:54,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 140 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:16:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48550 states. [2023-12-16 01:16:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48550 to 48139. [2023-12-16 01:16:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48139 states, 48138 states have (on average 1.1111180356475134) internal successors, (53487), 48138 states have internal predecessors, (53487), 0 states have call successors, (0), 0 states 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 01:16:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48139 states to 48139 states and 53487 transitions. [2023-12-16 01:16:55,062 INFO L78 Accepts]: Start accepts. Automaton has 48139 states and 53487 transitions. Word has length 262 [2023-12-16 01:16:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:55,062 INFO L495 AbstractCegarLoop]: Abstraction has 48139 states and 53487 transitions. [2023-12-16 01:16:55,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:16:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 48139 states and 53487 transitions. [2023-12-16 01:16:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-16 01:16:55,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:55,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:16:55,074 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:55,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1554542357, now seen corresponding path program 1 times [2023-12-16 01:16:55,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979562349] [2023-12-16 01:16:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 01:16:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979562349] [2023-12-16 01:16:55,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979562349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205061943] [2023-12-16 01:16:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:55,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:55,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:55,424 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 01:16:55,426 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 01:16:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:55,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:16:55,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 01:16:55,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:55,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205061943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:55,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:55,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:16:55,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489960880] [2023-12-16 01:16:55,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:55,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:55,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:55,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:55,712 INFO L87 Difference]: Start difference. First operand 48139 states and 53487 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 01:16:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:56,619 INFO L93 Difference]: Finished difference Result 128435 states and 142721 transitions. [2023-12-16 01:16:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 269 [2023-12-16 01:16:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:56,703 INFO L225 Difference]: With dead ends: 128435 [2023-12-16 01:16:56,703 INFO L226 Difference]: Without dead ends: 80297 [2023-12-16 01:16:56,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 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 01:16:56,714 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 104 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:56,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 186 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:16:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80297 states. [2023-12-16 01:16:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80297 to 71764. [2023-12-16 01:16:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.1076878056937418) internal successors, (79491), 71763 states have internal predecessors, (79491), 0 states have call successors, (0), 0 states 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 01:16:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 79491 transitions. [2023-12-16 01:16:57,567 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 79491 transitions. Word has length 269 [2023-12-16 01:16:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:16:57,568 INFO L495 AbstractCegarLoop]: Abstraction has 71764 states and 79491 transitions. [2023-12-16 01:16:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 01:16:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 79491 transitions. [2023-12-16 01:16:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-16 01:16:57,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:16:57,588 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:16:57,593 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 01:16:57,789 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 01:16:57,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:16:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:16:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash -144983928, now seen corresponding path program 1 times [2023-12-16 01:16:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:16:57,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017244174] [2023-12-16 01:16:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:16:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 189 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-16 01:16:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:16:58,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017244174] [2023-12-16 01:16:58,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017244174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:16:58,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969179026] [2023-12-16 01:16:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:16:58,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:16:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:16:58,233 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 01:16:58,234 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 01:16:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:16:58,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:16:58,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:16:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-16 01:16:58,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:16:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969179026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:16:58,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:16:58,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:16:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105207403] [2023-12-16 01:16:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:16:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:16:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:16:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:16:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:16:58,484 INFO L87 Difference]: Start difference. First operand 71764 states and 79491 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 01:16:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:16:59,178 INFO L93 Difference]: Finished difference Result 212440 states and 235408 transitions. [2023-12-16 01:16:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:16:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 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 334 [2023-12-16 01:16:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:16:59,323 INFO L225 Difference]: With dead ends: 212440 [2023-12-16 01:16:59,324 INFO L226 Difference]: Without dead ends: 141083 [2023-12-16 01:16:59,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 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 01:16:59,379 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 244 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:16:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 574 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:16:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141083 states. [2023-12-16 01:17:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141083 to 141081. [2023-12-16 01:17:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141081 states, 141080 states have (on average 1.1075418202438332) internal successors, (156252), 141080 states have internal predecessors, (156252), 0 states have call successors, (0), 0 states 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 01:17:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141081 states to 141081 states and 156252 transitions. [2023-12-16 01:17:01,496 INFO L78 Accepts]: Start accepts. Automaton has 141081 states and 156252 transitions. Word has length 334 [2023-12-16 01:17:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:01,496 INFO L495 AbstractCegarLoop]: Abstraction has 141081 states and 156252 transitions. [2023-12-16 01:17:01,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 01:17:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 141081 states and 156252 transitions. [2023-12-16 01:17:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-16 01:17:01,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:01,546 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:17:01,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 01:17:01,751 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 01:17:01,752 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:01,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -552380248, now seen corresponding path program 1 times [2023-12-16 01:17:01,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:01,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339993182] [2023-12-16 01:17:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-12-16 01:17:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339993182] [2023-12-16 01:17:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339993182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:02,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:02,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200590595] [2023-12-16 01:17:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:02,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:02,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:02,157 INFO L87 Difference]: Start difference. First operand 141081 states and 156252 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 01:17:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:03,598 INFO L93 Difference]: Finished difference Result 317068 states and 351788 transitions. [2023-12-16 01:17:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:03,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 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 443 [2023-12-16 01:17:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:03,806 INFO L225 Difference]: With dead ends: 317068 [2023-12-16 01:17:03,806 INFO L226 Difference]: Without dead ends: 175176 [2023-12-16 01:17:03,841 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 01:17:03,841 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 162 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:03,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 173 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175176 states. [2023-12-16 01:17:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175176 to 158551. [2023-12-16 01:17:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158551 states, 158550 states have (on average 1.1077956480605486) internal successors, (175641), 158550 states have internal predecessors, (175641), 0 states have call successors, (0), 0 states 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 01:17:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158551 states to 158551 states and 175641 transitions. [2023-12-16 01:17:06,097 INFO L78 Accepts]: Start accepts. Automaton has 158551 states and 175641 transitions. Word has length 443 [2023-12-16 01:17:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:06,097 INFO L495 AbstractCegarLoop]: Abstraction has 158551 states and 175641 transitions. [2023-12-16 01:17:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 01:17:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 158551 states and 175641 transitions. [2023-12-16 01:17:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-16 01:17:06,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:06,138 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:17:06,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:17:06,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:06,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1866485920, now seen corresponding path program 1 times [2023-12-16 01:17:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576623062] [2023-12-16 01:17:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:06,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 01:17:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576623062] [2023-12-16 01:17:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576623062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:06,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020022889] [2023-12-16 01:17:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:06,568 INFO L87 Difference]: Start difference. First operand 158551 states and 175641 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 01:17:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:07,972 INFO L93 Difference]: Finished difference Result 300710 states and 332585 transitions. [2023-12-16 01:17:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 444 [2023-12-16 01:17:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:08,165 INFO L225 Difference]: With dead ends: 300710 [2023-12-16 01:17:08,165 INFO L226 Difference]: Without dead ends: 139724 [2023-12-16 01:17:08,232 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 01:17:08,233 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 130 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 325 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:17:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139724 states. [2023-12-16 01:17:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139724 to 124263. [2023-12-16 01:17:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124263 states, 124262 states have (on average 1.0864785694741754) internal successors, (135008), 124262 states have internal predecessors, (135008), 0 states have call successors, (0), 0 states 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 01:17:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124263 states to 124263 states and 135008 transitions. [2023-12-16 01:17:10,268 INFO L78 Accepts]: Start accepts. Automaton has 124263 states and 135008 transitions. Word has length 444 [2023-12-16 01:17:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:10,268 INFO L495 AbstractCegarLoop]: Abstraction has 124263 states and 135008 transitions. [2023-12-16 01:17:10,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 01:17:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 124263 states and 135008 transitions. [2023-12-16 01:17:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-12-16 01:17:10,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:10,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:10,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:17:10,363 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:10,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -800983689, now seen corresponding path program 1 times [2023-12-16 01:17:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873313341] [2023-12-16 01:17:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2023-12-16 01:17:10,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:10,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873313341] [2023-12-16 01:17:10,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873313341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:10,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:10,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442099388] [2023-12-16 01:17:10,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:10,961 INFO L87 Difference]: Start difference. First operand 124263 states and 135008 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 01:17:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:12,567 INFO L93 Difference]: Finished difference Result 266467 states and 289413 transitions. [2023-12-16 01:17:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 671 [2023-12-16 01:17:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:12,736 INFO L225 Difference]: With dead ends: 266467 [2023-12-16 01:17:12,736 INFO L226 Difference]: Without dead ends: 142611 [2023-12-16 01:17:12,762 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 01:17:12,764 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 346 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:12,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 125 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:17:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142611 states. [2023-12-16 01:17:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142611 to 124466. [2023-12-16 01:17:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124466 states, 124465 states have (on average 1.0863937653155507) internal successors, (135218), 124465 states have internal predecessors, (135218), 0 states have call successors, (0), 0 states 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 01:17:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124466 states to 124466 states and 135218 transitions. [2023-12-16 01:17:14,400 INFO L78 Accepts]: Start accepts. Automaton has 124466 states and 135218 transitions. Word has length 671 [2023-12-16 01:17:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:14,401 INFO L495 AbstractCegarLoop]: Abstraction has 124466 states and 135218 transitions. [2023-12-16 01:17:14,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 01:17:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 124466 states and 135218 transitions. [2023-12-16 01:17:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-12-16 01:17:14,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:14,474 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:14,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:17:14,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:14,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2010415943, now seen corresponding path program 1 times [2023-12-16 01:17:14,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:14,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052098887] [2023-12-16 01:17:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:14,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 937 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 01:17:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052098887] [2023-12-16 01:17:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052098887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:15,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:17:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900413867] [2023-12-16 01:17:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:17:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:17:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:17:15,412 INFO L87 Difference]: Start difference. First operand 124466 states and 135218 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 01:17:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:16,746 INFO L93 Difference]: Finished difference Result 252004 states and 273784 transitions. [2023-12-16 01:17:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:17:16,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 673 [2023-12-16 01:17:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:16,907 INFO L225 Difference]: With dead ends: 252004 [2023-12-16 01:17:16,907 INFO L226 Difference]: Without dead ends: 128351 [2023-12-16 01:17:16,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 01:17:16,971 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 217 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 161 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128351 states. [2023-12-16 01:17:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128351 to 127917. [2023-12-16 01:17:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127917 states, 127916 states have (on average 1.0809828324838175) internal successors, (138275), 127916 states have internal predecessors, (138275), 0 states have call successors, (0), 0 states 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 01:17:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127917 states to 127917 states and 138275 transitions. [2023-12-16 01:17:18,713 INFO L78 Accepts]: Start accepts. Automaton has 127917 states and 138275 transitions. Word has length 673 [2023-12-16 01:17:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:18,713 INFO L495 AbstractCegarLoop]: Abstraction has 127917 states and 138275 transitions. [2023-12-16 01:17:18,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 01:17:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 127917 states and 138275 transitions. [2023-12-16 01:17:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-12-16 01:17:18,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:18,789 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:17:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 01:17:18,789 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash -869313947, now seen corresponding path program 1 times [2023-12-16 01:17:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:18,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246699609] [2023-12-16 01:17:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 839 proven. 119 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 01:17:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246699609] [2023-12-16 01:17:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246699609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652871037] [2023-12-16 01:17:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:20,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:20,860 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 01:17:20,863 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 01:17:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:21,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:21,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 1069 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-12-16 01:17:21,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652871037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 01:17:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343954193] [2023-12-16 01:17:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:17:21,226 INFO L87 Difference]: Start difference. First operand 127917 states and 138275 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:22,028 INFO L93 Difference]: Finished difference Result 182658 states and 197042 transitions. [2023-12-16 01:17:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 690 [2023-12-16 01:17:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:22,029 INFO L225 Difference]: With dead ends: 182658 [2023-12-16 01:17:22,029 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 01:17:22,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:17:22,093 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 140 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:22,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 329 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:17:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 01:17:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 01:17:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 01:17:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 01:17:22,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 690 [2023-12-16 01:17:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:22,094 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 01:17:22,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 01:17:22,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 01:17:22,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:17:22,103 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 01:17:22,302 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,SelfDestructingSolverStorable21 [2023-12-16 01:17:22,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 01:17:30,389 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-289-13-9-12-8-10-6-8-4-8-2-8-2-8-1 term,while PolyPacSimplificationTermWalker was simplifying 9 xjuncts wrt. a ∧-271-12-9-10-7-8-5-8-3-6-2-5-1 context. [2023-12-16 01:17:30,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 01:17:30,404 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:17:30,414 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 01:17:30,416 INFO L158 Benchmark]: Toolchain (without parser) took 56959.94ms. Allocated memory was 286.3MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 239.6MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 01:17:30,416 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 231.7MB. Free memory is still 180.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:17:30,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.82ms. Allocated memory is still 286.3MB. Free memory was 239.2MB in the beginning and 235.2MB in the end (delta: 4.1MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. [2023-12-16 01:17:30,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.38ms. Allocated memory is still 286.3MB. Free memory was 235.2MB in the beginning and 220.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 01:17:30,421 INFO L158 Benchmark]: Boogie Preprocessor took 114.08ms. Allocated memory is still 286.3MB. Free memory was 220.0MB in the beginning and 207.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 01:17:30,421 INFO L158 Benchmark]: RCFGBuilder took 1420.66ms. Allocated memory is still 286.3MB. Free memory was 207.4MB in the beginning and 212.9MB in the end (delta: -5.5MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. [2023-12-16 01:17:30,421 INFO L158 Benchmark]: TraceAbstraction took 54733.95ms. Allocated memory was 286.3MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 212.4MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 01:17:30,424 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 231.7MB. Free memory is still 180.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 589.82ms. Allocated memory is still 286.3MB. Free memory was 239.2MB in the beginning and 235.2MB in the end (delta: 4.1MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 96.38ms. Allocated memory is still 286.3MB. Free memory was 235.2MB in the beginning and 220.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 114.08ms. Allocated memory is still 286.3MB. Free memory was 220.0MB in the beginning and 207.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1420.66ms. Allocated memory is still 286.3MB. Free memory was 207.4MB in the beginning and 212.9MB in the end (delta: -5.5MB). Peak memory consumption was 108.8MB. Max. memory is 8.0GB. * TraceAbstraction took 54733.95ms. Allocated memory was 286.3MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 212.4MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-289-13-9-12-8-10-6-8-4-8-2-8-2-8-1 term,while PolyPacSimplificationTermWalker was simplifying 9 xjuncts wrt. a ∧-292-13-9-12-8-10-6-8-4-8-2-8-2-8-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown