This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:22:35,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:22:35,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:22:35,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:22:35,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:22:35,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:22:35,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:22:35,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:22:35,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:22:35,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:22:35,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:22:35,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:22:35,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:22:35,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:22:35,234 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:22:35,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:22:35,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:22:35,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:22:35,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:22:35,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:22:35,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:22:35,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:22:35,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:22:35,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:22:35,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:22:35,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:22:35,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:22:35,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:22:35,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:22:35,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:22:35,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:22:35,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:22:35,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:22:35,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:22:35,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:22:35,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:22:35,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:22:35,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:22:35,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:22:35,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:22:35,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:22:35,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:22:35,244 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:22:35,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:22:35,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:22:35,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:22:35,451 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:22:35,451 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:22:35,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_valuebound1.yml/witness-2.1.yml [2024-09-13 10:22:35,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:22:35,540 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:22:35,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2024-09-13 10:22:36,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:22:36,953 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:22:36,954 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2024-09-13 10:22:36,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c7848dde6/1f1c58402f6b44bb9cc052d04d3072d7/FLAG199a4998b [2024-09-13 10:22:36,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c7848dde6/1f1c58402f6b44bb9cc052d04d3072d7 [2024-09-13 10:22:36,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:22:36,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:22:36,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:22:36,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:22:36,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:22:36,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:22:35" (1/2) ... [2024-09-13 10:22:36,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22552885 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:22:36, skipping insertion in model container [2024-09-13 10:22:36,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:22:35" (1/2) ... [2024-09-13 10:22:36,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a72ede7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:22:36, skipping insertion in model container [2024-09-13 10:22:36,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:22:36" (2/2) ... [2024-09-13 10:22:36,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22552885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:36, skipping insertion in model container [2024-09-13 10:22:36,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:22:36" (2/2) ... [2024-09-13 10:22:36,991 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:22:36,992 INFO L1541 ArrayList]: Loop invariant at [L37-L50] (((((((a == v) && (1 <= (a % 4294967296))) && (b == y)) && ((x + ((b / 4294967296) * 4294967296)) <= (y + ((a / 4294967296) * 4294967296)))) && (b == u)) && (y <= (((y / 4294967296) * 4294967296) + 1))) && (a == x)) [2024-09-13 10:22:36,992 INFO L1541 ArrayList]: Function contract at [L11]: requires (\old(cond) == 1), ensures (\old(cond) == 1) [2024-09-13 10:22:36,994 INFO L1541 ArrayList]: Function contract at [L8]: requires null, ensures (\old(cond) != 0) [2024-09-13 10:22:37,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:22:37,122 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2024-09-13 10:22:37,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:22:37,141 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 10:22:37,169 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] Start Parsing Local [2024-09-13 10:22:37,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:22:37,189 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:22:37,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37 WrapperNode [2024-09-13 10:22:37,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:22:37,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:22:37,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:22:37,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:22:37,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,218 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2024-09-13 10:22:37,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:22:37,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:22:37,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:22:37,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:22:37,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,235 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:22:37,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:22:37,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:22:37,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:22:37,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:22:37,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (1/1) ... [2024-09-13 10:22:37,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:22:37,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:22:37,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:22:37,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:22:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:22:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:22:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:22:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:22:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:22:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:22:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:22:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:22:37,398 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:22:37,403 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:22:37,602 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:22:37,633 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-09-13 10:22:37,633 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:22:37,661 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:22:37,661 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 10:22:37,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:22:37 BoogieIcfgContainer [2024-09-13 10:22:37,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:22:37,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:22:37,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:22:37,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:22:37,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:22:35" (1/4) ... [2024-09-13 10:22:37,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0c3bd0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:22:37, skipping insertion in model container [2024-09-13 10:22:37,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:22:36" (2/4) ... [2024-09-13 10:22:37,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0c3bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:22:37, skipping insertion in model container [2024-09-13 10:22:37,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:22:37" (3/4) ... [2024-09-13 10:22:37,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0c3bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:22:37, skipping insertion in model container [2024-09-13 10:22:37,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:22:37" (4/4) ... [2024-09-13 10:22:37,672 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2024-09-13 10:22:37,685 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:22:37,686 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-09-13 10:22:37,718 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:22:37,723 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@58087554, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:22:37,723 INFO L337 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-09-13 10:22:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 10:22:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:22:37,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:22:37,731 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:22:37,732 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:22:37,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:22:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 107291455, now seen corresponding path program 1 times [2024-09-13 10:22:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:22:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496625330] [2024-09-13 10:22:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:22:37,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:22:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:22:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:22:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496625330] [2024-09-13 10:22:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496625330] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:22:37,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:22:37,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:22:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058970311] [2024-09-13 10:22:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:22:37,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:22:37,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:22:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:22:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:22:37,985 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:22:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:22:38,089 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-09-13 10:22:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:22:38,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:22:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:22:38,097 INFO L225 Difference]: With dead ends: 31 [2024-09-13 10:22:38,098 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 10:22:38,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:22:38,101 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:22:38,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:22:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 10:22:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 10:22:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:22:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-09-13 10:22:38,127 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 5 [2024-09-13 10:22:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:22:38,128 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-09-13 10:22:38,128 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:22:38,128 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-09-13 10:22:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-13 10:22:38,129 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:22:38,129 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:22:38,130 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:22:38,130 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:22:38,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:22:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -768939130, now seen corresponding path program 1 times [2024-09-13 10:22:38,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:22:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058089581] [2024-09-13 10:22:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:22:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:22:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:22:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:22:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:22:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:22:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 10:22:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 10:22:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-13 10:22:39,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:22:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058089581] [2024-09-13 10:22:39,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058089581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:22:39,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272187634] [2024-09-13 10:22:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:22:39,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:22:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:22:39,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:22:39,818 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:22:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:22:39,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 10:22:39,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:22:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-13 10:22:40,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:22:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-13 10:22:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272187634] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:22:40,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:22:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-09-13 10:22:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068275383] [2024-09-13 10:22:40,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:22:40,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 10:22:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:22:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 10:22:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:22:40,525 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 13 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 10:22:44,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:22:48,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:22:52,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:22:56,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:00,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:04,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:08,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:12,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:16,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:20,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:24,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:28,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:32,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:36,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:40,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:44,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:48,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:52,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:23:56,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:00,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:04,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:08,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:12,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:16,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 10:24:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:24:16,741 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-09-13 10:24:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 10:24:16,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) Word has length 34 [2024-09-13 10:24:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:24:16,751 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:24:16,751 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 10:24:16,752 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-09-13 10:24:16,755 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:24:16,756 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 24 Unknown, 0 Unchecked, 96.2s Time] [2024-09-13 10:24:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 10:24:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 10:24:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:24:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-09-13 10:24:16,762 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 34 [2024-09-13 10:24:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:24:16,763 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-09-13 10:24:16,763 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 10:24:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-09-13 10:24:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 10:24:16,765 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:24:16,765 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:24:16,782 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:24:16,969 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:24:16,970 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:24:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:24:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash -216127383, now seen corresponding path program 1 times [2024-09-13 10:24:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:24:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35588183] [2024-09-13 10:24:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:24:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:24:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:24:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776700497] [2024-09-13 10:24:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:24:16,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:24:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:24:17,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:24:17,003 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:24:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 10:24:17,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:24:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:24:17,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:24:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:24:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35588183] [2024-09-13 10:24:17,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:24:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776700497] [2024-09-13 10:24:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776700497] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:24:17,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:24:17,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:24:17,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886439596] [2024-09-13 10:24:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:24:17,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:24:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:24:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:24:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,126 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:24:17,140 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-09-13 10:24:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:24:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 36 [2024-09-13 10:24:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:24:17,141 INFO L225 Difference]: With dead ends: 25 [2024-09-13 10:24:17,141 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 10:24:17,142 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,142 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:24:17,142 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:24:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 10:24:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 10:24:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:24:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-09-13 10:24:17,149 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 36 [2024-09-13 10:24:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:24:17,149 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-09-13 10:24:17,150 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-09-13 10:24:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 10:24:17,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:24:17,151 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:24:17,157 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 10:24:17,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:24:17,352 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:24:17,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:24:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -493168233, now seen corresponding path program 1 times [2024-09-13 10:24:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:24:17,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904897788] [2024-09-13 10:24:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:24:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:24:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:24:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:24:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:24:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:24:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 10:24:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 10:24:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:24:17,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:24:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904897788] [2024-09-13 10:24:17,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904897788] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:24:17,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:24:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:24:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593058719] [2024-09-13 10:24:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:24:17,415 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:24:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:24:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:24:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,416 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:24:17,423 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2024-09-13 10:24:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:24:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-09-13 10:24:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:24:17,424 INFO L225 Difference]: With dead ends: 23 [2024-09-13 10:24:17,424 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 10:24:17,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,425 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:24:17,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:24:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 10:24:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 10:24:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:24:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-09-13 10:24:17,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 39 [2024-09-13 10:24:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:24:17,444 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-09-13 10:24:17,444 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-09-13 10:24:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 10:24:17,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:24:17,445 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:24:17,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:24:17,445 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 3 more)] === [2024-09-13 10:24:17,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:24:17,445 INFO L85 PathProgramCache]: Analyzing trace with hash -493168072, now seen corresponding path program 1 times [2024-09-13 10:24:17,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:24:17,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161693539] [2024-09-13 10:24:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:24:17,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:24:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:24:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:24:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:24:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:24:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 10:24:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-13 10:24:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:24:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:24:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:24:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161693539] [2024-09-13 10:24:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161693539] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:24:17,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:24:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:24:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756332036] [2024-09-13 10:24:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:24:17,479 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:24:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:24:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:24:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,480 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:24:17,488 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-09-13 10:24:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:24:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-09-13 10:24:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:24:17,489 INFO L225 Difference]: With dead ends: 22 [2024-09-13 10:24:17,489 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:24:17,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:24:17,490 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:24:17,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:24:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:24:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:24:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:24:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:24:17,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2024-09-13 10:24:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:24:17,492 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:24:17,492 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:24:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:24:17,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:24:17,494 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-09-13 10:24:17,494 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (4 of 6 remaining) [2024-09-13 10:24:17,494 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (3 of 6 remaining) [2024-09-13 10:24:17,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 6 remaining) [2024-09-13 10:24:17,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-09-13 10:24:17,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 6 remaining) [2024-09-13 10:24:17,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:24:17,497 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-13 10:24:17,499 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:24:17,503 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 10:24:17,503 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 10:24:17,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:24:17 BoogieIcfgContainer [2024-09-13 10:24:17,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:24:17,504 INFO L158 Benchmark]: Toolchain (without parser) took 100531.30ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 103.0MB in the beginning and 165.3MB in the end (delta: -62.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:24:17,504 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:24:17,504 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:24:17,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.24ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 89.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:24:17,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.66ms. Allocated memory is still 176.2MB. Free memory was 89.1MB in the beginning and 87.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:24:17,505 INFO L158 Benchmark]: Boogie Preprocessor took 23.64ms. Allocated memory is still 176.2MB. Free memory was 87.1MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:24:17,505 INFO L158 Benchmark]: RCFGBuilder took 418.49ms. Allocated memory is still 176.2MB. Free memory was 85.4MB in the beginning and 67.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-13 10:24:17,505 INFO L158 Benchmark]: TraceAbstraction took 99840.85ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 66.9MB in the beginning and 165.3MB in the end (delta: -98.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:24:17,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.24ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 89.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.66ms. Allocated memory is still 176.2MB. Free memory was 89.1MB in the beginning and 87.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.64ms. Allocated memory is still 176.2MB. Free memory was 87.1MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.49ms. Allocated memory is still 176.2MB. Free memory was 85.4MB in the beginning and 67.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 99840.85ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 66.9MB in the beginning and 165.3MB in the end (delta: -98.4MB). There was no memory consumed. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 37]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 8]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 99.8s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 96.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 96.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 96.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 118 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 132 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1076 SizeOfPredicates, 2 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 304/360 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:24:17,563 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...