/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/list-simple/dll2c_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:41:24,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:41:24,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:41:24,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:41:24,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:41:24,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:41:24,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:41:24,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:41:24,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:41:24,261 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:41:24,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:41:24,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:41:24,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:41:24,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:41:24,264 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:41:24,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:41:24,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:41:24,265 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:41:24,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:41:24,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:41:24,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:41:24,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:41:24,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:41:24,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:41:24,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:41:24,266 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:41:24,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:41:24,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:41:24,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:41:24,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:41:24,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:41:24,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:41:24,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:41:24,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:41:24,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:41:24,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:41:24,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:41:24,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:41:24,270 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:41:24,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:41:24,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:41:24,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:41:24,531 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:41:24,531 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:41:24,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2023-12-16 04:41:25,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:41:26,017 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:41:26,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2023-12-16 04:41:26,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65945468a/1b5c474e05684114aa7cf704c445c5f9/FLAGa720e8659 [2023-12-16 04:41:26,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65945468a/1b5c474e05684114aa7cf704c445c5f9 [2023-12-16 04:41:26,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:41:26,049 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:41:26,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:41:26,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:41:26,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:41:26,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ee98a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26, skipping insertion in model container [2023-12-16 04:41:26,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:41:26,369 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_insert_equal.i[24877,24890] [2023-12-16 04:41:26,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:41:26,384 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:41:26,438 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_insert_equal.i[24877,24890] [2023-12-16 04:41:26,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:41:26,461 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:41:26,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26 WrapperNode [2023-12-16 04:41:26,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:41:26,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:41:26,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:41:26,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:41:26,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,499 INFO L138 Inliner]: procedures = 127, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 156 [2023-12-16 04:41:26,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:41:26,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:41:26,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:41:26,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:41:26,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,542 INFO L175 MemorySlicer]: Split 35 memory accesses to 3 slices as follows [2, 22, 11]. 63 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 18 writes are split as follows [0, 17, 1]. [2023-12-16 04:41:26,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:41:26,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:41:26,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:41:26,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:41:26,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (1/1) ... [2023-12-16 04:41:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:41:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:26,615 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 04:41:26,617 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 04:41:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:41:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-12-16 04:41:26,637 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 04:41:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-16 04:41:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 04:41:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:41:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:41:26,742 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:41:26,745 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:41:27,030 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:41:27,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:41:27,078 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 04:41:27,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:41:27 BoogieIcfgContainer [2023-12-16 04:41:27,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:41:27,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:41:27,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:41:27,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:41:27,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:41:26" (1/3) ... [2023-12-16 04:41:27,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9c42d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:41:27, skipping insertion in model container [2023-12-16 04:41:27,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:26" (2/3) ... [2023-12-16 04:41:27,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9c42d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:41:27, skipping insertion in model container [2023-12-16 04:41:27,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:41:27" (3/3) ... [2023-12-16 04:41:27,087 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2023-12-16 04:41:27,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:41:27,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:41:27,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:41:27,147 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;@515aa1ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:41:27,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:41:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 04:41:27,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:27,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:27,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:27,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -680816188, now seen corresponding path program 1 times [2023-12-16 04:41:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228744612] [2023-12-16 04:41:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:41:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 04:41:27,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:27,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228744612] [2023-12-16 04:41:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228744612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:27,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:41:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259749724] [2023-12-16 04:41:27,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:27,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:41:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:41:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:41:27,615 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 27 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:41:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:27,700 INFO L93 Difference]: Finished difference Result 56 states and 83 transitions. [2023-12-16 04:41:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:41:27,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-12-16 04:41:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:27,708 INFO L225 Difference]: With dead ends: 56 [2023-12-16 04:41:27,708 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 04:41:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:41:27,716 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:27,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:41:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 04:41:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-16 04:41:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-12-16 04:41:27,753 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 19 [2023-12-16 04:41:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:27,756 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-12-16 04:41:27,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:41:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-12-16 04:41:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 04:41:27,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:27,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:27,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:41:27,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:27,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1161558312, now seen corresponding path program 1 times [2023-12-16 04:41:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070023078] [2023-12-16 04:41:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:41:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 04:41:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070023078] [2023-12-16 04:41:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070023078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:27,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:27,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:41:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44127680] [2023-12-16 04:41:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:27,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:41:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:41:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:41:27,975 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 04:41:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:28,045 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-12-16 04:41:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:41:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-16 04:41:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:28,047 INFO L225 Difference]: With dead ends: 35 [2023-12-16 04:41:28,047 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 04:41:28,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 04:41:28,050 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:28,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:41:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 04:41:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-16 04:41:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-16 04:41:28,062 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 19 [2023-12-16 04:41:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-16 04:41:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 04:41:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-16 04:41:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 04:41:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:28,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:41:28,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash -112877035, now seen corresponding path program 1 times [2023-12-16 04:41:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71310745] [2023-12-16 04:41:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:41:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:41:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71310745] [2023-12-16 04:41:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71310745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:28,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:28,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:41:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56743514] [2023-12-16 04:41:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:28,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:41:28,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:41:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:41:28,211 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:41:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:28,266 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2023-12-16 04:41:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:41:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-16 04:41:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:28,268 INFO L225 Difference]: With dead ends: 47 [2023-12-16 04:41:28,268 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 04:41:28,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 04:41:28,273 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:28,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 61 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:41:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 04:41:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 04:41:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2023-12-16 04:41:28,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 20 [2023-12-16 04:41:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:28,281 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2023-12-16 04:41:28,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:41:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-12-16 04:41:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 04:41:28,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:28,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 04:41:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:41:28,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:28,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 935091600, now seen corresponding path program 1 times [2023-12-16 04:41:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333575501] [2023-12-16 04:41:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:30,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 04:41:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 04:41:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333575501] [2023-12-16 04:41:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333575501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282513071] [2023-12-16 04:41:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:30,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:41:30,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:41:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:31,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-16 04:41:31,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:41:31,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-16 04:41:31,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 04:41:31,515 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-16 04:41:31,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-16 04:41:31,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 04:41:31,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-16 04:41:31,728 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-16 04:41:31,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2023-12-16 04:41:31,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-16 04:41:31,950 INFO L349 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2023-12-16 04:41:31,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 183 treesize of output 151 [2023-12-16 04:41:31,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:41:31,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2023-12-16 04:41:31,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 86 [2023-12-16 04:41:32,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-12-16 04:41:32,167 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-16 04:41:32,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 95 [2023-12-16 04:41:32,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-16 04:41:32,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-12-16 04:41:32,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-16 04:41:32,396 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-16 04:41:32,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-16 04:41:32,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:41:32,425 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-16 04:41:32,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 109 [2023-12-16 04:41:32,448 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-12-16 04:41:32,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2023-12-16 04:41:32,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 19 [2023-12-16 04:41:32,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2023-12-16 04:41:32,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2023-12-16 04:41:32,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 04:41:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:41:32,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:41:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282513071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:46,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:41:46,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 43 [2023-12-16 04:41:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113218495] [2023-12-16 04:41:46,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:41:46,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 04:41:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 04:41:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2164, Unknown=28, NotChecked=0, Total=2352 [2023-12-16 04:41:46,426 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 04:41:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:49,036 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2023-12-16 04:41:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-16 04:41:49,037 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2023-12-16 04:41:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:49,038 INFO L225 Difference]: With dead ends: 69 [2023-12-16 04:41:49,038 INFO L226 Difference]: Without dead ends: 67 [2023-12-16 04:41:49,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=364, Invalid=4577, Unknown=29, NotChecked=0, Total=4970 [2023-12-16 04:41:49,041 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:49,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 354 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1136 Invalid, 1 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 04:41:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-16 04:41:49,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 36. [2023-12-16 04:41:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-12-16 04:41:49,049 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2023-12-16 04:41:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:49,049 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-12-16 04:41:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 04:41:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-12-16 04:41:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 04:41:49,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:49,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 04:41:49,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:41:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:49,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:49,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 158692931, now seen corresponding path program 1 times [2023-12-16 04:41:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002621755] [2023-12-16 04:41:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 04:41:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 04:41:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002621755] [2023-12-16 04:41:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002621755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:49,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:41:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649106976] [2023-12-16 04:41:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:41:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:41:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:41:49,429 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:41:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:49,482 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-12-16 04:41:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:41:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-16 04:41:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:49,484 INFO L225 Difference]: With dead ends: 45 [2023-12-16 04:41:49,484 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 04:41:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:41:49,485 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:49,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 68 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:41:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 04:41:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-16 04:41:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-12-16 04:41:49,494 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 29 [2023-12-16 04:41:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:49,494 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-12-16 04:41:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:41:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-12-16 04:41:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 04:41:49,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:49,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:41:49,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:49,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash 458760797, now seen corresponding path program 2 times [2023-12-16 04:41:49,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:49,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860253264] [2023-12-16 04:41:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 04:41:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 04:41:49,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:49,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860253264] [2023-12-16 04:41:49,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860253264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:49,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:49,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:41:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518381530] [2023-12-16 04:41:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:41:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:41:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:41:49,651 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:41:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:49,718 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-12-16 04:41:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:41:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-16 04:41:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:49,719 INFO L225 Difference]: With dead ends: 44 [2023-12-16 04:41:49,719 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 04:41:49,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:41:49,720 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:49,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 62 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:41:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 04:41:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-16 04:41:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:41:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-12-16 04:41:49,726 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 29 [2023-12-16 04:41:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:49,726 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-12-16 04:41:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:41:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-12-16 04:41:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 04:41:49,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:49,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 04:41:49,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:41:49,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 976741128, now seen corresponding path program 1 times [2023-12-16 04:41:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481165534] [2023-12-16 04:41:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 04:41:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 04:41:50,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481165534] [2023-12-16 04:41:50,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481165534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512479305] [2023-12-16 04:41:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:50,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:50,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:41:50,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:41:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:50,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-16 04:41:50,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:41:50,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-16 04:41:50,977 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-16 04:41:50,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-12-16 04:41:51,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 04:41:51,071 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-16 04:41:51,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2023-12-16 04:41:51,183 INFO L349 Elim1Store]: treesize reduction 74, result has 12.9 percent of original size [2023-12-16 04:41:51,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 162 [2023-12-16 04:41:51,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 94 [2023-12-16 04:41:51,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 56 [2023-12-16 04:41:51,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:41:51,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 17 [2023-12-16 04:41:51,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-16 04:41:51,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:41:51,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 52 [2023-12-16 04:41:51,362 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-12-16 04:41:51,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2023-12-16 04:41:51,814 INFO L349 Elim1Store]: treesize reduction 827, result has 22.3 percent of original size [2023-12-16 04:41:51,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 447 treesize of output 300 [2023-12-16 04:42:14,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:42:14,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 2831 treesize of output 4763 Received shutdown request... [2023-12-16 04:42:30,246 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:42:30,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:42:30,258 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:42:30,258 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 04:42:30,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-16 04:42:30,453 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-224-14-4-6-1 context. [2023-12-16 04:42:30,457 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-12-16 04:42:30,459 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:42:30,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:42:30 BoogieIcfgContainer [2023-12-16 04:42:30,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:42:30,463 INFO L158 Benchmark]: Toolchain (without parser) took 64413.53ms. Allocated memory was 338.7MB in the beginning and 669.0MB in the end (delta: 330.3MB). Free memory was 283.6MB in the beginning and 259.3MB in the end (delta: 24.4MB). Peak memory consumption was 396.1MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,465 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:42:30,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.70ms. Allocated memory is still 338.7MB. Free memory was 283.6MB in the beginning and 264.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.41ms. Allocated memory is still 338.7MB. Free memory was 264.8MB in the beginning and 262.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,466 INFO L158 Benchmark]: Boogie Preprocessor took 69.02ms. Allocated memory is still 338.7MB. Free memory was 262.7MB in the beginning and 259.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,466 INFO L158 Benchmark]: RCFGBuilder took 508.83ms. Allocated memory is still 338.7MB. Free memory was 259.0MB in the beginning and 236.5MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,467 INFO L158 Benchmark]: TraceAbstraction took 63380.55ms. Allocated memory was 338.7MB in the beginning and 669.0MB in the end (delta: 330.3MB). Free memory was 235.4MB in the beginning and 259.3MB in the end (delta: -23.8MB). Peak memory consumption was 347.9MB. Max. memory is 8.0GB. [2023-12-16 04:42:30,469 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory was 153.1MB in the beginning and 153.0MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 411.70ms. Allocated memory is still 338.7MB. Free memory was 283.6MB in the beginning and 264.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.41ms. Allocated memory is still 338.7MB. Free memory was 264.8MB in the beginning and 262.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 69.02ms. Allocated memory is still 338.7MB. Free memory was 262.7MB in the beginning and 259.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 508.83ms. Allocated memory is still 338.7MB. Free memory was 259.0MB in the beginning and 236.5MB in the end (delta: 22.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 63380.55ms. Allocated memory was 338.7MB in the beginning and 669.0MB in the end (delta: 330.3MB). Free memory was 235.4MB in the beginning and 259.3MB in the end (delta: -23.8MB). Peak memory consumption was 347.9MB. 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: 658]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 658). Cancelled while NwaCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-224-14-4-6-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.3s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 671 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 514 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1276 IncrementalHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 157 mSDtfsCounter, 1276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 165 ConstructedInterpolants, 9 QuantifiedInterpolants, 1876 SizeOfPredicates, 28 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 43/55 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