/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.leader_election.2.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:34:18,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:34:18,054 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 19:34:18,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:34:18,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:34:18,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:34:18,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:34:18,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:34:18,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:34:18,072 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:34:18,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:34:18,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:34:18,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:34:18,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:34:18,074 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:34:18,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:34:18,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:34:18,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:34:18,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:34:18,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:34:18,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:34:18,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:34:18,076 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:34:18,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:34:18,077 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:34:18,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:34:18,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:34:18,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:34:18,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:34:18,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:34:18,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:34:18,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:34:18,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:34:18,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:34:18,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:34:18,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:34:18,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:34:18,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:34:18,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:34:18,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:34:18,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:34:18,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:34:18,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:34:18,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:34:18,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:34:18,293 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:34:18,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-func-interl.c [2023-12-16 19:34:19,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:34:19,909 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:34:19,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.leader_election.2.prop1-func-interl.c [2023-12-16 19:34:19,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d41ceb2b/3946a75800634810b662bb39663c6fae/FLAGadf22d26d [2023-12-16 19:34:19,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d41ceb2b/3946a75800634810b662bb39663c6fae [2023-12-16 19:34:19,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:34:19,960 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:34:19,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:34:19,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:34:19,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:34:19,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:34:19" (1/1) ... [2023-12-16 19:34:19,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c73fb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:19, skipping insertion in model container [2023-12-16 19:34:19,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:34:19" (1/1) ... [2023-12-16 19:34:20,102 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:34:20,353 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.leader_election.2.prop1-func-interl.c[1182,1195] [2023-12-16 19:34:21,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:34:21,231 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:34:21,242 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.leader_election.2.prop1-func-interl.c[1182,1195] [2023-12-16 19:34:21,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:34:21,716 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:34:21,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21 WrapperNode [2023-12-16 19:34:21,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:34:21,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:34:21,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:34:21,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:34:21,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:21,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:24,788 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34809 [2023-12-16 19:34:24,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:34:24,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:34:24,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:34:24,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:34:24,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:24,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:25,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:26,423 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 19:34:26,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:26,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:27,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:27,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:27,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:27,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:28,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:34:28,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:34:28,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:34:28,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:34:28,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (1/1) ... [2023-12-16 19:34:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:34:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:34:28,682 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 19:34:28,737 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 19:34:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:34:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:34:28,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:34:28,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:34:30,066 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:34:30,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:34:43,809 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:34:44,289 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:34:44,289 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:34:44,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:34:44 BoogieIcfgContainer [2023-12-16 19:34:44,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:34:44,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:34:44,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:34:44,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:34:44,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:34:19" (1/3) ... [2023-12-16 19:34:44,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f6efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:34:44, skipping insertion in model container [2023-12-16 19:34:44,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:34:21" (2/3) ... [2023-12-16 19:34:44,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f6efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:34:44, skipping insertion in model container [2023-12-16 19:34:44,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:34:44" (3/3) ... [2023-12-16 19:34:44,297 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.leader_election.2.prop1-func-interl.c [2023-12-16 19:34:44,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:34:44,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:34:44,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:34:44,453 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;@11f7e4ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:34:44,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:34:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 7735 states, 7733 states have (on average 1.6683046683046683) internal successors, (12901), 7734 states have internal predecessors, (12901), 0 states have call successors, (0), 0 states 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 19:34:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-16 19:34:44,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:34:44,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:44,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:34:44,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:34:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash 497488162, now seen corresponding path program 1 times [2023-12-16 19:34:44,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:34:44,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830525823] [2023-12-16 19:34:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:34:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:34:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:34:46,836 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 19:34:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:34:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830525823] [2023-12-16 19:34:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830525823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:34:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:34:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:34:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764619974] [2023-12-16 19:34:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:34:46,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:34:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:34:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:34:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:34:46,891 INFO L87 Difference]: Start difference. First operand has 7735 states, 7733 states have (on average 1.6683046683046683) internal successors, (12901), 7734 states have internal predecessors, (12901), 0 states have call successors, (0), 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 86.0) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 19:34:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:34:55,052 INFO L93 Difference]: Finished difference Result 22347 states and 37279 transitions. [2023-12-16 19:34:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:34:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 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 430 [2023-12-16 19:34:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:34:55,236 INFO L225 Difference]: With dead ends: 22347 [2023-12-16 19:34:55,237 INFO L226 Difference]: Without dead ends: 15039 [2023-12-16 19:34:55,257 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 19:34:55,260 INFO L413 NwaCegarLoop]: 9545 mSDtfsCounter, 36848 mSDsluCounter, 19084 mSDsCounter, 0 mSdLazyCounter, 10061 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36848 SdHoareTripleChecker+Valid, 28629 SdHoareTripleChecker+Invalid, 10062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:34:55,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36848 Valid, 28629 Invalid, 10062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10061 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-16 19:34:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15039 states. [2023-12-16 19:34:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15039 to 7937. [2023-12-16 19:34:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 7936 states have (on average 1.6677167338709677) internal successors, (13235), 7936 states have internal predecessors, (13235), 0 states have call successors, (0), 0 states 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 19:34:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 13235 transitions. [2023-12-16 19:34:55,546 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 13235 transitions. Word has length 430 [2023-12-16 19:34:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:34:55,551 INFO L495 AbstractCegarLoop]: Abstraction has 7937 states and 13235 transitions. [2023-12-16 19:34:55,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 19:34:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 13235 transitions. [2023-12-16 19:34:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-16 19:34:55,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:34:55,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:34:55,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:34:55,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:34:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -964884770, now seen corresponding path program 1 times [2023-12-16 19:34:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:34:55,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664401273] [2023-12-16 19:34:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:34:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:34:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:34:56,615 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 19:34:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:34:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664401273] [2023-12-16 19:34:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664401273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:34:56,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:34:56,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:34:56,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941576988] [2023-12-16 19:34:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:34:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:34:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:34:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:34:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:56,625 INFO L87 Difference]: Start difference. First operand 7937 states and 13235 transitions. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 19:34:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:34:56,825 INFO L93 Difference]: Finished difference Result 7941 states and 13239 transitions. [2023-12-16 19:34:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:34:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 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 431 [2023-12-16 19:34:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:34:56,862 INFO L225 Difference]: With dead ends: 7941 [2023-12-16 19:34:56,862 INFO L226 Difference]: Without dead ends: 7939 [2023-12-16 19:34:56,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:56,868 INFO L413 NwaCegarLoop]: 12894 mSDtfsCounter, 1 mSDsluCounter, 25783 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38677 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:34:56,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38677 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:34:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2023-12-16 19:34:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7939. [2023-12-16 19:34:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7939 states, 7938 states have (on average 1.6675485008818343) internal successors, (13237), 7938 states have internal predecessors, (13237), 0 states have call successors, (0), 0 states 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 19:34:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 13237 transitions. [2023-12-16 19:34:57,018 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 13237 transitions. Word has length 431 [2023-12-16 19:34:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:34:57,018 INFO L495 AbstractCegarLoop]: Abstraction has 7939 states and 13237 transitions. [2023-12-16 19:34:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 19:34:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 13237 transitions. [2023-12-16 19:34:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-16 19:34:57,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:34:57,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:34:57,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:34:57,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:34:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash 155070706, now seen corresponding path program 1 times [2023-12-16 19:34:57,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:34:57,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618032333] [2023-12-16 19:34:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:34:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:34:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:34:57,814 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 19:34:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:34:57,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618032333] [2023-12-16 19:34:57,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618032333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:34:57,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:34:57,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:34:57,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341682223] [2023-12-16 19:34:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:34:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:34:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:34:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:34:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:57,821 INFO L87 Difference]: Start difference. First operand 7939 states and 13237 transitions. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:34:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:34:58,086 INFO L93 Difference]: Finished difference Result 15250 states and 25429 transitions. [2023-12-16 19:34:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:34:58,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 432 [2023-12-16 19:34:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:34:58,103 INFO L225 Difference]: With dead ends: 15250 [2023-12-16 19:34:58,104 INFO L226 Difference]: Without dead ends: 7942 [2023-12-16 19:34:58,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:58,123 INFO L413 NwaCegarLoop]: 12894 mSDtfsCounter, 1 mSDsluCounter, 25781 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38675 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:34:58,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38675 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:34:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2023-12-16 19:34:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 7941. [2023-12-16 19:34:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7941 states, 7940 states have (on average 1.6673803526448363) internal successors, (13239), 7940 states have internal predecessors, (13239), 0 states have call successors, (0), 0 states 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 19:34:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 13239 transitions. [2023-12-16 19:34:58,291 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 13239 transitions. Word has length 432 [2023-12-16 19:34:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:34:58,292 INFO L495 AbstractCegarLoop]: Abstraction has 7941 states and 13239 transitions. [2023-12-16 19:34:58,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:34:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 13239 transitions. [2023-12-16 19:34:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-16 19:34:58,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:34:58,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:58,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:34:58,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:34:58,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:34:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash 301794680, now seen corresponding path program 1 times [2023-12-16 19:34:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:34:58,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369720710] [2023-12-16 19:34:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:34:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:34:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:34:59,099 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 19:34:59,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:34:59,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369720710] [2023-12-16 19:34:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369720710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:34:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:34:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:34:59,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293639629] [2023-12-16 19:34:59,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:34:59,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:34:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:34:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:34:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:59,104 INFO L87 Difference]: Start difference. First operand 7941 states and 13239 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 19:34:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:34:59,402 INFO L93 Difference]: Finished difference Result 22551 states and 37604 transitions. [2023-12-16 19:34:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:34:59,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 433 [2023-12-16 19:34:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:34:59,433 INFO L225 Difference]: With dead ends: 22551 [2023-12-16 19:34:59,433 INFO L226 Difference]: Without dead ends: 15241 [2023-12-16 19:34:59,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:34:59,453 INFO L413 NwaCegarLoop]: 13233 mSDtfsCounter, 12172 mSDsluCounter, 26116 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12172 SdHoareTripleChecker+Valid, 39349 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:34:59,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12172 Valid, 39349 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:34:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15241 states. [2023-12-16 19:34:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15241 to 7943. [2023-12-16 19:34:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7943 states, 7942 states have (on average 1.6672122890959455) internal successors, (13241), 7942 states have internal predecessors, (13241), 0 states have call successors, (0), 0 states 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 19:34:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7943 states to 7943 states and 13241 transitions. [2023-12-16 19:34:59,660 INFO L78 Accepts]: Start accepts. Automaton has 7943 states and 13241 transitions. Word has length 433 [2023-12-16 19:34:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:34:59,661 INFO L495 AbstractCegarLoop]: Abstraction has 7943 states and 13241 transitions. [2023-12-16 19:34:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 19:34:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7943 states and 13241 transitions. [2023-12-16 19:34:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-16 19:34:59,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:34:59,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:34:59,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:34:59,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:34:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1929357480, now seen corresponding path program 1 times [2023-12-16 19:34:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:34:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971852505] [2023-12-16 19:34:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:34:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:34:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:35:01,124 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 19:35:01,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:35:01,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971852505] [2023-12-16 19:35:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971852505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:35:01,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:35:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:35:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700321362] [2023-12-16 19:35:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:35:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:35:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:35:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:35:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:35:01,129 INFO L87 Difference]: Start difference. First operand 7943 states and 13241 transitions. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 19:35:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:35:10,572 INFO L93 Difference]: Finished difference Result 22570 states and 37628 transitions. [2023-12-16 19:35:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:35:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 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 434 [2023-12-16 19:35:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:35:10,597 INFO L225 Difference]: With dead ends: 22570 [2023-12-16 19:35:10,597 INFO L226 Difference]: Without dead ends: 15258 [2023-12-16 19:35:10,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:35:10,612 INFO L413 NwaCegarLoop]: 9610 mSDtfsCounter, 36509 mSDsluCounter, 28744 mSDsCounter, 0 mSdLazyCounter, 14241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36509 SdHoareTripleChecker+Valid, 38354 SdHoareTripleChecker+Invalid, 14242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:35:10,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36509 Valid, 38354 Invalid, 14242 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 14241 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-16 19:35:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15258 states. Received shutdown request... [2023-12-16 19:35:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15258 to 7952. [2023-12-16 19:35:10,769 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:35:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 7951 states have (on average 1.666708590114451) internal successors, (13252), 7951 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states 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 19:35:10,780 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:35:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:35:10,781 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 19:35:10,785 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 19:35:10,787 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:35:10,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:35:10 BoogieIcfgContainer [2023-12-16 19:35:10,788 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:35:10,789 INFO L158 Benchmark]: Toolchain (without parser) took 50829.10ms. Allocated memory was 294.6MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 226.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-16 19:35:10,789 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 136.1MB in the end (delta: 157.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:35:10,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1756.30ms. Allocated memory was 294.6MB in the beginning and 558.9MB in the end (delta: 264.2MB). Free memory was 226.2MB in the beginning and 394.6MB in the end (delta: -168.4MB). Peak memory consumption was 275.3MB. Max. memory is 8.0GB. [2023-12-16 19:35:10,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 3070.25ms. Allocated memory was 558.9MB in the beginning and 2.8GB in the end (delta: 2.2GB). Free memory was 394.6MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 476.6MB. Max. memory is 8.0GB. [2023-12-16 19:35:10,790 INFO L158 Benchmark]: Boogie Preprocessor took 3849.52ms. Allocated memory was 2.8GB in the beginning and 4.9GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 4.0GB in the end (delta: -1.9GB). Peak memory consumption was 220.7MB. Max. memory is 8.0GB. [2023-12-16 19:35:10,790 INFO L158 Benchmark]: RCFGBuilder took 15650.20ms. Allocated memory was 4.9GB in the beginning and 5.0GB in the end (delta: 125.8MB). Free memory was 4.0GB in the beginning and 3.8GB in the end (delta: 215.5MB). Peak memory consumption was 350.2MB. Max. memory is 8.0GB. [2023-12-16 19:35:10,790 INFO L158 Benchmark]: TraceAbstraction took 26496.64ms. Allocated memory is still 5.0GB. Free memory was 3.8GB in the beginning and 1.3GB in the end (delta: 2.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-16 19:35:10,792 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 136.1MB in the end (delta: 157.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1756.30ms. Allocated memory was 294.6MB in the beginning and 558.9MB in the end (delta: 264.2MB). Free memory was 226.2MB in the beginning and 394.6MB in the end (delta: -168.4MB). Peak memory consumption was 275.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 3070.25ms. Allocated memory was 558.9MB in the beginning and 2.8GB in the end (delta: 2.2GB). Free memory was 394.6MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 476.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 3849.52ms. Allocated memory was 2.8GB in the beginning and 4.9GB in the end (delta: 2.1GB). Free memory was 2.2GB in the beginning and 4.0GB in the end (delta: -1.9GB). Peak memory consumption was 220.7MB. Max. memory is 8.0GB. * RCFGBuilder took 15650.20ms. Allocated memory was 4.9GB in the beginning and 5.0GB in the end (delta: 125.8MB). Free memory was 4.0GB in the beginning and 3.8GB in the end (delta: 215.5MB). Peak memory consumption was 350.2MB. Max. memory is 8.0GB. * TraceAbstraction took 26496.64ms. Allocated memory is still 5.0GB. Free memory was 3.8GB in the beginning and 1.3GB in the end (delta: 2.5GB). Peak memory consumption was 2.5GB. 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 ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7735 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85531 SdHoareTripleChecker+Valid, 16.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85531 mSDsluCounter, 183684 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125508 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24349 IncrementalHoareTripleChecker+Invalid, 24352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 58176 mSDtfsCounter, 24349 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7943occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14401 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 2155 ConstructedInterpolants, 0 QuantifiedInterpolants, 7253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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