/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.anderson.5.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:50:50,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:50:50,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 18:50:50,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:50:50,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:50:50,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:50:50,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:50:50,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:50:50,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:50:50,684 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:50:50,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:50:50,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:50:50,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:50:50,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:50:50,687 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:50:50,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:50:50,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:50:50,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 18:50:50,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:50:50,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:50:50,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:50:50,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:50:50,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:50:50,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:50:50,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:50:50,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:50:50,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:50:50,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:50:50,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:50:50,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:50:50,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:50:50,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:50:50,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:50:50,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 18:50:50,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 18:50:50,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:50:50,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:50:50,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:50:50,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:50:50,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:50:50,693 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 18:50:50,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:50:50,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:50:50,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:50:50,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:50:50,967 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:50:50,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.anderson.5.prop1-back-serstep.c [2023-12-16 18:50:52,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:50:52,429 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:50:52,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.anderson.5.prop1-back-serstep.c [2023-12-16 18:50:52,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ff4e936/a750c9f71141492faf182d51d93cb3de/FLAGbe520bb0c [2023-12-16 18:50:52,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ff4e936/a750c9f71141492faf182d51d93cb3de [2023-12-16 18:50:52,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:50:52,480 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:50:52,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:50:52,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:50:52,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:50:52,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:50:52" (1/1) ... [2023-12-16 18:50:52,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19bff028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:52, skipping insertion in model container [2023-12-16 18:50:52,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:50:52" (1/1) ... [2023-12-16 18:50:52,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:50:52,770 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.anderson.5.prop1-back-serstep.c[1176,1189] [2023-12-16 18:50:53,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:50:53,259 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:50:53,270 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.anderson.5.prop1-back-serstep.c[1176,1189] [2023-12-16 18:50:53,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:50:53,465 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:50:53,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53 WrapperNode [2023-12-16 18:50:53,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:50:53,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:50:53,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:50:53,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:50:53,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:53,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:54,815 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11208 [2023-12-16 18:50:54,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:50:54,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:50:54,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:50:54,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:50:54,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:54,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,116 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,306 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 18:50:55,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:55,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:56,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:50:56,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:50:56,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:50:56,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:50:56,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (1/1) ... [2023-12-16 18:50:56,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:50:56,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:50:56,079 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 18:50:56,108 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 18:50:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:50:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 18:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:50:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:50:56,677 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:50:56,679 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:51:02,025 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:51:02,188 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:51:02,189 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 18:51:02,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:51:02 BoogieIcfgContainer [2023-12-16 18:51:02,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:51:02,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:51:02,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:51:02,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:51:02,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:50:52" (1/3) ... [2023-12-16 18:51:02,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5de46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:51:02, skipping insertion in model container [2023-12-16 18:51:02,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:50:53" (2/3) ... [2023-12-16 18:51:02,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc5de46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:51:02, skipping insertion in model container [2023-12-16 18:51:02,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:51:02" (3/3) ... [2023-12-16 18:51:02,198 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.5.prop1-back-serstep.c [2023-12-16 18:51:02,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:51:02,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:51:02,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:51:02,306 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;@4a724c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:51:02,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:51:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 2525 states, 2523 states have (on average 1.6706302021403092) internal successors, (4215), 2524 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states 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 18:51:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-16 18:51:02,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:02,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:02,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:02,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash -491226435, now seen corresponding path program 1 times [2023-12-16 18:51:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:02,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935915895] [2023-12-16 18:51:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:04,168 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 18:51:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935915895] [2023-12-16 18:51:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935915895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531027295] [2023-12-16 18:51:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:04,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:04,220 INFO L87 Difference]: Start difference. First operand has 2525 states, 2523 states have (on average 1.6706302021403092) internal successors, (4215), 2524 states have internal predecessors, (4215), 0 states have call successors, (0), 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 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:06,991 INFO L93 Difference]: Finished difference Result 7341 states and 12261 transitions. [2023-12-16 18:51:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:06,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2023-12-16 18:51:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:07,027 INFO L225 Difference]: With dead ends: 7341 [2023-12-16 18:51:07,027 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:07,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:07,041 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12070 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12070 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:07,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12070 Valid, 9746 Invalid, 2887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 18:51:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2679. [2023-12-16 18:51:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2678 states have (on average 1.6687826736370426) internal successors, (4469), 2678 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states 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 18:51:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 4469 transitions. [2023-12-16 18:51:07,177 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 4469 transitions. Word has length 296 [2023-12-16 18:51:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:07,178 INFO L495 AbstractCegarLoop]: Abstraction has 2679 states and 4469 transitions. [2023-12-16 18:51:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 4469 transitions. [2023-12-16 18:51:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-16 18:51:07,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:07,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:07,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 18:51:07,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:07,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2037081891, now seen corresponding path program 1 times [2023-12-16 18:51:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036910752] [2023-12-16 18:51:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:08,051 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 18:51:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036910752] [2023-12-16 18:51:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036910752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:08,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985695534] [2023-12-16 18:51:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:08,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:08,055 INFO L87 Difference]: Start difference. First operand 2679 states and 4469 transitions. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 18:51:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:10,925 INFO L93 Difference]: Finished difference Result 7419 states and 12368 transitions. [2023-12-16 18:51:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 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 297 [2023-12-16 18:51:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:10,950 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:10,951 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:10,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:10,957 INFO L413 NwaCegarLoop]: 3483 mSDtfsCounter, 12103 mSDsluCounter, 10740 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12103 SdHoareTripleChecker+Valid, 14223 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:10,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12103 Valid, 14223 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 18:51:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:11,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2684. [2023-12-16 18:51:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2683 states have (on average 1.6682817741334328) internal successors, (4476), 2683 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states 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 18:51:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4476 transitions. [2023-12-16 18:51:11,035 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4476 transitions. Word has length 297 [2023-12-16 18:51:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:11,039 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 4476 transitions. [2023-12-16 18:51:11,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 18:51:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4476 transitions. [2023-12-16 18:51:11,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 18:51:11,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:11,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:11,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 18:51:11,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:11,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1041153075, now seen corresponding path program 1 times [2023-12-16 18:51:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:11,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804194866] [2023-12-16 18:51:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:11,983 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 18:51:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804194866] [2023-12-16 18:51:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804194866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:11,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278695906] [2023-12-16 18:51:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:11,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:11,990 INFO L87 Difference]: Start difference. First operand 2684 states and 4476 transitions. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 18:51:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:14,530 INFO L93 Difference]: Finished difference Result 7339 states and 12248 transitions. [2023-12-16 18:51:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:14,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2023-12-16 18:51:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:14,548 INFO L225 Difference]: With dead ends: 7339 [2023-12-16 18:51:14,549 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:14,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:14,555 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12060 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12060 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:14,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12060 Valid, 9746 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 18:51:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2685. [2023-12-16 18:51:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2684 states have (on average 1.6680327868852458) internal successors, (4477), 2684 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states 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 18:51:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 4477 transitions. [2023-12-16 18:51:14,609 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 4477 transitions. Word has length 298 [2023-12-16 18:51:14,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:14,609 INFO L495 AbstractCegarLoop]: Abstraction has 2685 states and 4477 transitions. [2023-12-16 18:51:14,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 18:51:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 4477 transitions. [2023-12-16 18:51:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 18:51:14,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:14,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:14,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 18:51:14,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:14,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1512509425, now seen corresponding path program 1 times [2023-12-16 18:51:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473836124] [2023-12-16 18:51:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:15,140 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 18:51:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:15,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473836124] [2023-12-16 18:51:15,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473836124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:15,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:15,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589558027] [2023-12-16 18:51:15,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:15,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:15,144 INFO L87 Difference]: Start difference. First operand 2685 states and 4477 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 18:51:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:17,772 INFO L93 Difference]: Finished difference Result 7419 states and 12366 transitions. [2023-12-16 18:51:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:17,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2023-12-16 18:51:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:17,788 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:17,788 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:17,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:17,792 INFO L413 NwaCegarLoop]: 3485 mSDtfsCounter, 12094 mSDsluCounter, 10740 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12094 SdHoareTripleChecker+Valid, 14225 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:17,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12094 Valid, 14225 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2856 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 18:51:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2690. [2023-12-16 18:51:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 1.6675343994049832) internal successors, (4484), 2689 states have internal predecessors, (4484), 0 states have call successors, (0), 0 states 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 18:51:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4484 transitions. [2023-12-16 18:51:17,851 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4484 transitions. Word has length 298 [2023-12-16 18:51:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:17,852 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 4484 transitions. [2023-12-16 18:51:17,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 18:51:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4484 transitions. [2023-12-16 18:51:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-16 18:51:17,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:17,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 18:51:17,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:17,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 682559121, now seen corresponding path program 1 times [2023-12-16 18:51:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138840901] [2023-12-16 18:51:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:51:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138840901] [2023-12-16 18:51:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138840901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:18,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:18,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271877615] [2023-12-16 18:51:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:18,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:18,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:18,353 INFO L87 Difference]: Start difference. First operand 2690 states and 4484 transitions. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 18:51:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:20,612 INFO L93 Difference]: Finished difference Result 7419 states and 12365 transitions. [2023-12-16 18:51:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 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 299 [2023-12-16 18:51:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:20,629 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:20,629 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:20,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:20,634 INFO L413 NwaCegarLoop]: 3486 mSDtfsCounter, 12087 mSDsluCounter, 10740 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12087 SdHoareTripleChecker+Valid, 14226 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12087 Valid, 14226 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 18:51:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2696. [2023-12-16 18:51:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2695 states have (on average 1.6671614100185528) internal successors, (4493), 2695 states have internal predecessors, (4493), 0 states have call successors, (0), 0 states 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 18:51:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4493 transitions. [2023-12-16 18:51:20,691 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4493 transitions. Word has length 299 [2023-12-16 18:51:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:20,692 INFO L495 AbstractCegarLoop]: Abstraction has 2696 states and 4493 transitions. [2023-12-16 18:51:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 18:51:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4493 transitions. [2023-12-16 18:51:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-16 18:51:20,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:20,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 18:51:20,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:20,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1836070759, now seen corresponding path program 1 times [2023-12-16 18:51:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538236994] [2023-12-16 18:51:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:21,338 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 18:51:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:21,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538236994] [2023-12-16 18:51:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538236994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:21,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:21,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201678798] [2023-12-16 18:51:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:21,341 INFO L87 Difference]: Start difference. First operand 2696 states and 4493 transitions. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:23,417 INFO L93 Difference]: Finished difference Result 7339 states and 12245 transitions. [2023-12-16 18:51:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2023-12-16 18:51:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:23,442 INFO L225 Difference]: With dead ends: 7339 [2023-12-16 18:51:23,442 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:23,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:23,447 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12044 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12044 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:23,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12044 Valid, 9746 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 18:51:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2697. [2023-12-16 18:51:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2696 states have (on average 1.666913946587537) internal successors, (4494), 2696 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states 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 18:51:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4494 transitions. [2023-12-16 18:51:23,513 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4494 transitions. Word has length 300 [2023-12-16 18:51:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:23,514 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4494 transitions. [2023-12-16 18:51:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4494 transitions. [2023-12-16 18:51:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-16 18:51:23,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:23,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:23,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 18:51:23,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:23,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1069602523, now seen corresponding path program 1 times [2023-12-16 18:51:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:23,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070503894] [2023-12-16 18:51:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:23,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:23,983 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 18:51:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070503894] [2023-12-16 18:51:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070503894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:23,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:23,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919047265] [2023-12-16 18:51:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:23,985 INFO L87 Difference]: Start difference. First operand 2697 states and 4494 transitions. Second operand has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:26,198 INFO L93 Difference]: Finished difference Result 7419 states and 12363 transitions. [2023-12-16 18:51:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2023-12-16 18:51:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:26,206 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:26,206 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:26,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:26,212 INFO L413 NwaCegarLoop]: 3488 mSDtfsCounter, 12076 mSDsluCounter, 10740 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12076 SdHoareTripleChecker+Valid, 14228 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:26,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12076 Valid, 14228 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 18:51:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2705. [2023-12-16 18:51:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2704 states have (on average 1.6664201183431953) internal successors, (4506), 2704 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states 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 18:51:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4506 transitions. [2023-12-16 18:51:26,257 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4506 transitions. Word has length 300 [2023-12-16 18:51:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:26,258 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 4506 transitions. [2023-12-16 18:51:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4506 transitions. [2023-12-16 18:51:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 18:51:26,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:26,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 18:51:26,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:26,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1100600673, now seen corresponding path program 1 times [2023-12-16 18:51:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595162451] [2023-12-16 18:51:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:26,905 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 18:51:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595162451] [2023-12-16 18:51:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595162451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:26,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412287926] [2023-12-16 18:51:26,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:26,908 INFO L87 Difference]: Start difference. First operand 2705 states and 4506 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 18:51:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:29,046 INFO L93 Difference]: Finished difference Result 7339 states and 12243 transitions. [2023-12-16 18:51:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2023-12-16 18:51:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:29,055 INFO L225 Difference]: With dead ends: 7339 [2023-12-16 18:51:29,055 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:29,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:29,060 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12033 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12033 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:29,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12033 Valid, 9746 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 18:51:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2706. [2023-12-16 18:51:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2705 states have (on average 1.666173752310536) internal successors, (4507), 2705 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states 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 18:51:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4507 transitions. [2023-12-16 18:51:29,109 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4507 transitions. Word has length 301 [2023-12-16 18:51:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:29,109 INFO L495 AbstractCegarLoop]: Abstraction has 2706 states and 4507 transitions. [2023-12-16 18:51:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 18:51:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4507 transitions. [2023-12-16 18:51:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-16 18:51:29,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:29,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:29,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 18:51:29,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:29,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash -805802593, now seen corresponding path program 1 times [2023-12-16 18:51:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536925048] [2023-12-16 18:51:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:29,589 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 18:51:29,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:29,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536925048] [2023-12-16 18:51:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536925048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:29,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:29,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:29,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661828435] [2023-12-16 18:51:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:29,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:29,592 INFO L87 Difference]: Start difference. First operand 2706 states and 4507 transitions. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 18:51:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:31,056 INFO L93 Difference]: Finished difference Result 7419 states and 12361 transitions. [2023-12-16 18:51:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2023-12-16 18:51:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:31,064 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:31,064 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:31,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:31,068 INFO L413 NwaCegarLoop]: 3490 mSDtfsCounter, 15914 mSDsluCounter, 7587 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15914 SdHoareTripleChecker+Valid, 11077 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:31,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15914 Valid, 11077 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 18:51:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2711. [2023-12-16 18:51:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.6656826568265684) internal successors, (4514), 2710 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states 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 18:51:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4514 transitions. [2023-12-16 18:51:31,111 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4514 transitions. Word has length 301 [2023-12-16 18:51:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:31,111 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 4514 transitions. [2023-12-16 18:51:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 18:51:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4514 transitions. [2023-12-16 18:51:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 18:51:31,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:31,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 18:51:31,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:31,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1411893083, now seen corresponding path program 1 times [2023-12-16 18:51:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720154455] [2023-12-16 18:51:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:31,793 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 18:51:31,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:31,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720154455] [2023-12-16 18:51:31,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720154455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:31,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:31,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:31,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590795940] [2023-12-16 18:51:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:31,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:31,795 INFO L87 Difference]: Start difference. First operand 2711 states and 4514 transitions. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:33,985 INFO L93 Difference]: Finished difference Result 7339 states and 12241 transitions. [2023-12-16 18:51:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-12-16 18:51:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:33,996 INFO L225 Difference]: With dead ends: 7339 [2023-12-16 18:51:33,996 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:33,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:33,999 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12024 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12024 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:33,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12024 Valid, 9746 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 18:51:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2712. [2023-12-16 18:51:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 1.6654371080782) internal successors, (4515), 2711 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states 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 18:51:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4515 transitions. [2023-12-16 18:51:34,043 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4515 transitions. Word has length 302 [2023-12-16 18:51:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:34,043 INFO L495 AbstractCegarLoop]: Abstraction has 2712 states and 4515 transitions. [2023-12-16 18:51:34,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4515 transitions. [2023-12-16 18:51:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-12-16 18:51:34,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:34,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:34,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 18:51:34,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:34,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -207081831, now seen corresponding path program 1 times [2023-12-16 18:51:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253034206] [2023-12-16 18:51:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:34,482 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 18:51:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253034206] [2023-12-16 18:51:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253034206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640205098] [2023-12-16 18:51:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:34,484 INFO L87 Difference]: Start difference. First operand 2712 states and 4515 transitions. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:36,759 INFO L93 Difference]: Finished difference Result 7419 states and 12359 transitions. [2023-12-16 18:51:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-12-16 18:51:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:36,766 INFO L225 Difference]: With dead ends: 7419 [2023-12-16 18:51:36,766 INFO L226 Difference]: Without dead ends: 5011 [2023-12-16 18:51:36,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:36,771 INFO L413 NwaCegarLoop]: 3492 mSDtfsCounter, 12058 mSDsluCounter, 10740 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12058 SdHoareTripleChecker+Valid, 14232 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:36,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12058 Valid, 14232 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 18:51:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-12-16 18:51:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 2717. [2023-12-16 18:51:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2716 states have (on average 1.6649484536082475) internal successors, (4522), 2716 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 18:51:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4522 transitions. [2023-12-16 18:51:36,819 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4522 transitions. Word has length 302 [2023-12-16 18:51:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:36,819 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 4522 transitions. [2023-12-16 18:51:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:51:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4522 transitions. [2023-12-16 18:51:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-16 18:51:36,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:36,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:36,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 18:51:36,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:36,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 885688021, now seen corresponding path program 1 times [2023-12-16 18:51:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:36,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944876683] [2023-12-16 18:51:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:36,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:37,419 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 18:51:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944876683] [2023-12-16 18:51:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944876683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:37,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:51:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845727630] [2023-12-16 18:51:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:37,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:51:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:51:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:51:37,421 INFO L87 Difference]: Start difference. First operand 2717 states and 4522 transitions. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 18:51:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:51:39,586 INFO L93 Difference]: Finished difference Result 7339 states and 12239 transitions. [2023-12-16 18:51:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:51:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2023-12-16 18:51:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:51:39,591 INFO L225 Difference]: With dead ends: 7339 [2023-12-16 18:51:39,592 INFO L226 Difference]: Without dead ends: 4931 [2023-12-16 18:51:39,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 18:51:39,595 INFO L413 NwaCegarLoop]: 3251 mSDtfsCounter, 12015 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12015 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:39,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12015 Valid, 9746 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 18:51:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-16 18:51:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 2718. [2023-12-16 18:51:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 1.6647037173352963) internal successors, (4523), 2717 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states 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 18:51:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4523 transitions. [2023-12-16 18:51:39,640 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4523 transitions. Word has length 303 [2023-12-16 18:51:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:51:39,640 INFO L495 AbstractCegarLoop]: Abstraction has 2718 states and 4523 transitions. [2023-12-16 18:51:39,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 18:51:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4523 transitions. [2023-12-16 18:51:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-16 18:51:39,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:51:39,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 18:51:39,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:51:39,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:51:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1532216045, now seen corresponding path program 1 times [2023-12-16 18:51:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 18:51:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211141006] [2023-12-16 18:51:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:51:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 18:51:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:51:40,126 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 18:51:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 18:51:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211141006] [2023-12-16 18:51:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211141006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:51:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:51:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:51:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769904362] [2023-12-16 18:51:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:51:40,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:51:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 18:51:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:51:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:51:40,129 INFO L87 Difference]: Start difference. First operand 2718 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:51:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 18:51:41,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:51:41,856 INFO L413 NwaCegarLoop]: 3494 mSDtfsCounter, 9072 mSDsluCounter, 5316 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9072 SdHoareTripleChecker+Valid, 8810 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 18:51:41,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9072 Valid, 8810 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 18:51:41,857 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:51:41,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 18:51:41,858 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2718states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (5637 states constructed, input type IntersectNwa). [2023-12-16 18:51:41,862 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:51:41,864 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:51:41,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:51:41 BoogieIcfgContainer [2023-12-16 18:51:41,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:51:41,866 INFO L158 Benchmark]: Toolchain (without parser) took 49386.10ms. Allocated memory was 178.3MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 124.7MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 626.4MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,866 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:51:41,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 983.52ms. Allocated memory is still 178.3MB. Free memory was 124.7MB in the beginning and 52.7MB in the end (delta: 71.9MB). Peak memory consumption was 73.0MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 1348.94ms. Allocated memory was 178.3MB in the beginning and 474.0MB in the end (delta: 295.7MB). Free memory was 52.7MB in the beginning and 299.8MB in the end (delta: -247.0MB). Peak memory consumption was 141.0MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,867 INFO L158 Benchmark]: Boogie Preprocessor took 1233.87ms. Allocated memory was 474.0MB in the beginning and 879.8MB in the end (delta: 405.8MB). Free memory was 299.8MB in the beginning and 641.5MB in the end (delta: -341.7MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,867 INFO L158 Benchmark]: RCFGBuilder took 6139.60ms. Allocated memory was 879.8MB in the beginning and 1.7GB in the end (delta: 788.5MB). Free memory was 641.5MB in the beginning and 1.2GB in the end (delta: -559.4MB). Peak memory consumption was 289.9MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,868 INFO L158 Benchmark]: TraceAbstraction took 39673.49ms. Allocated memory was 1.7GB in the beginning and 2.3GB in the end (delta: 675.3MB). Free memory was 1.2GB in the beginning and 1.7GB in the end (delta: -465.3MB). Peak memory consumption was 211.1MB. Max. memory is 8.0GB. [2023-12-16 18:51:41,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 983.52ms. Allocated memory is still 178.3MB. Free memory was 124.7MB in the beginning and 52.7MB in the end (delta: 71.9MB). Peak memory consumption was 73.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1348.94ms. Allocated memory was 178.3MB in the beginning and 474.0MB in the end (delta: 295.7MB). Free memory was 52.7MB in the beginning and 299.8MB in the end (delta: -247.0MB). Peak memory consumption was 141.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1233.87ms. Allocated memory was 474.0MB in the beginning and 879.8MB in the end (delta: 405.8MB). Free memory was 299.8MB in the beginning and 641.5MB in the end (delta: -341.7MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * RCFGBuilder took 6139.60ms. Allocated memory was 879.8MB in the beginning and 1.7GB in the end (delta: 788.5MB). Free memory was 641.5MB in the beginning and 1.2GB in the end (delta: -559.4MB). Peak memory consumption was 289.9MB. Max. memory is 8.0GB. * TraceAbstraction took 39673.49ms. Allocated memory was 1.7GB in the beginning and 2.3GB in the end (delta: 675.3MB). Free memory was 1.2GB in the beginning and 1.7GB in the end (delta: -465.3MB). Peak memory consumption was 211.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (2718states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (5637 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2525 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 157650 SdHoareTripleChecker+Valid, 27.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157650 mSDsluCounter, 149497 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105573 mSDsCounter, 281 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35836 IncrementalHoareTripleChecker+Invalid, 36117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 281 mSolverCounterUnsat, 43924 mSDtfsCounter, 35836 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2718occurred in iteration=12, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 27252 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 3900 NumberOfCodeBlocks, 3900 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3887 ConstructedInterpolants, 0 QuantifiedInterpolants, 15259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown