This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:15:36,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:15:36,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:15:36,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:15:36,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:15:36,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:15:36,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:15:36,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:15:36,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:15:36,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:15:36,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:15:36,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:15:36,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:15:36,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:15:36,488 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:15:36,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:15:36,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:15:36,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:15:36,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:15:36,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:15:36,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:15:36,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:15:36,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:15:36,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:15:36,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:15:36,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:15:36,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:15:36,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:15:36,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:15:36,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:15:36,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:15:36,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:15:36,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:15:36,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:15:36,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:15:36,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:15:36,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:15:36,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:15:36,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:15:36,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:15:36,702 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:15:36,702 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:15:36,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/cohendiv-ll_valuebound20.yml/witness-2.1.yml [2024-09-13 10:15:36,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:15:36,776 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:15:36,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-09-13 10:15:37,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:15:38,098 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:15:38,098 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-09-13 10:15:38,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/eea363fdc/f0888e6a38024a8d9e47db1ece9ff0fb/FLAG467ab2e37 [2024-09-13 10:15:38,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/eea363fdc/f0888e6a38024a8d9e47db1ece9ff0fb [2024-09-13 10:15:38,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:15:38,116 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:15:38,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:15:38,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:15:38,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:15:38,121 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 10:15:36" (1/2) ... [2024-09-13 10:15:38,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6765ebe2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,122 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 10:15:36" (1/2) ... [2024-09-13 10:15:38,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76a1af91 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:38" (2/2) ... [2024-09-13 10:15:38,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6765ebe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:38" (2/2) ... [2024-09-13 10:15:38,130 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:15:38,130 INFO L1541 ArrayList]: Loop invariant at [L38-L62] ((((((__int128) q * y) + r) == x) && (((((__int128) q * y) + r) + ((__int128) a * y)) == (b + x))) && (1 <= y)) [2024-09-13 10:15:38,130 INFO L1541 ArrayList]: Loop invariant at [L47-L59] (((((((__int128) q * y) + r) == x) && (1 <= r)) && (((((__int128) q * y) + r) + ((__int128) a * y)) == (b + x))) && (1 <= y)) [2024-09-13 10:15:38,130 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-13 10:15:38,131 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-13 10:15:38,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:15:38,266 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/cohendiv-ll_valuebound20.c[576,589] [2024-09-13 10:15:38,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:15:38,284 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 10:15:38,328 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/cohendiv-ll_valuebound20.c[576,589] Start Parsing Local Start Parsing Local [2024-09-13 10:15:38,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:15:38,364 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:15:38,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38 WrapperNode [2024-09-13 10:15:38,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:15:38,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:15:38,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:15:38,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:15:38,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,387 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-13 10:15:38,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:15:38,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:15:38,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:15:38,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:15:38,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,403 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 10:15:38,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:15:38,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:15:38,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:15:38,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:15:38,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (1/1) ... [2024-09-13 10:15:38,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:15:38,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:38,433 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 10:15:38,434 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 10:15:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:15:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:15:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:15:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:15:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:15:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:15:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:15:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:15:38,516 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:15:38,518 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:15:38,640 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:15:38,667 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-09-13 10:15:38,667 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:15:38,684 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:15:38,685 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 10:15:38,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:15:38 BoogieIcfgContainer [2024-09-13 10:15:38,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:15:38,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:15:38,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:15:38,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:15:38,690 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 10:15:36" (1/4) ... [2024-09-13 10:15:38,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3314baa9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:15:38" (2/4) ... [2024-09-13 10:15:38,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3314baa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38" (3/4) ... [2024-09-13 10:15:38,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3314baa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:15:38" (4/4) ... [2024-09-13 10:15:38,692 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2024-09-13 10:15:38,712 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:15:38,712 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-13 10:15:38,745 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:15:38,749 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;@ecbf5bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:15:38,750 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-13 10:15:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 26 states have (on average 1.5) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 10:15:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:15:38,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:38,757 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:15:38,757 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 9 more)] === [2024-09-13 10:15:38,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash 131980187, now seen corresponding path program 1 times [2024-09-13 10:15:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:38,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395247464] [2024-09-13 10:15:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:38,857 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 10:15:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395247464] [2024-09-13 10:15:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395247464] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:15:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262455696] [2024-09-13 10:15:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:38,864 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 10:15:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 10:15:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:15:38,886 INFO L87 Difference]: Start difference. First operand has 44 states, 26 states have (on average 1.5) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 10:15:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:38,943 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-09-13 10:15:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 10:15:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 10:15:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:38,950 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:15:38,950 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 10:15:38,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:15:38,953 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:38,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 10:15:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-13 10:15:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:15:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-09-13 10:15:38,980 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 5 [2024-09-13 10:15:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:38,981 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-09-13 10:15:38,981 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 10:15:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-09-13 10:15:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:15:38,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:38,982 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:15:38,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:15:38,982 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:38,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash 131980249, now seen corresponding path program 1 times [2024-09-13 10:15:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846875522] [2024-09-13 10:15:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,061 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 10:15:39,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846875522] [2024-09-13 10:15:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846875522] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:15:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94213062] [2024-09-13 10:15:39,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,067 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:15:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:15:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:15:39,070 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. 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 10:15:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:39,106 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-09-13 10:15:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:15:39,109 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 10:15:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:39,109 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:15:39,109 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 10:15:39,110 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 10:15:39,111 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:39,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 10:15:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 10:15:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:15:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-09-13 10:15:39,118 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 5 [2024-09-13 10:15:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:39,119 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-09-13 10:15:39,119 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 10:15:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-09-13 10:15:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 10:15:39,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,120 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:39,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:15:39,120 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -905257559, now seen corresponding path program 1 times [2024-09-13 10:15:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642330147] [2024-09-13 10:15:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:39,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544868310] [2024-09-13 10:15:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:39,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:39,154 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 10:15:39,156 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 10:15:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 10:15:39,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 10:15:39,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:15:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642330147] [2024-09-13 10:15:39,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544868310] [2024-09-13 10:15:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544868310] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940384069] [2024-09-13 10:15:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:39,289 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:39,384 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-13 10:15:39,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:39,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-09-13 10:15:39,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:39,386 INFO L225 Difference]: With dead ends: 47 [2024-09-13 10:15:39,386 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 10:15:39,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:39,387 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:39,388 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 10:15:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 10:15:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.25) internal successors, (35), 33 states have internal predecessors, (35), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-09-13 10:15:39,396 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 19 [2024-09-13 10:15:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:39,396 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-09-13 10:15:39,397 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-09-13 10:15:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 10:15:39,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,397 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:39,409 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 10:15:39,598 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:39,598 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash 779692476, now seen corresponding path program 1 times [2024-09-13 10:15:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810597057] [2024-09-13 10:15:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:15:39,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810597057] [2024-09-13 10:15:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810597057] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:15:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214608047] [2024-09-13 10:15:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:15:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:15:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:39,679 INFO L87 Difference]: Start difference. First operand 47 states and 59 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:39,711 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-13 10:15:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:15:39,712 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 10:15:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:39,714 INFO L225 Difference]: With dead ends: 46 [2024-09-13 10:15:39,714 INFO L226 Difference]: Without dead ends: 46 [2024-09-13 10:15:39,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 10:15:39,715 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:39,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-13 10:15:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-09-13 10:15:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 32 states have internal predecessors, (34), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-09-13 10:15:39,721 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 24 [2024-09-13 10:15:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:39,722 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-09-13 10:15:39,722 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-09-13 10:15:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 10:15:39,722 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,722 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:39,722 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:15:39,723 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash 779692315, now seen corresponding path program 1 times [2024-09-13 10:15:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228155600] [2024-09-13 10:15:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:15:39,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228155600] [2024-09-13 10:15:39,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228155600] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:15:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473258996] [2024-09-13 10:15:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:15:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:15:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:39,775 INFO L87 Difference]: Start difference. First operand 46 states and 58 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:39,782 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2024-09-13 10:15:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:15:39,782 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 10:15:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:39,783 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:15:39,783 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:15:39,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 10:15:39,784 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 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 10:15:39,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:15:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 10:15:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-09-13 10:15:39,791 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 24 [2024-09-13 10:15:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:39,791 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-09-13 10:15:39,792 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-09-13 10:15:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 10:15:39,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,793 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:39,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:15:39,793 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,793 INFO L85 PathProgramCache]: Analyzing trace with hash 240470158, now seen corresponding path program 1 times [2024-09-13 10:15:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205636584] [2024-09-13 10:15:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360546742] [2024-09-13 10:15:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:39,817 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 10:15:39,820 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 10:15:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 10:15:39,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 10:15:39,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:15:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205636584] [2024-09-13 10:15:39,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360546742] [2024-09-13 10:15:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360546742] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302765726] [2024-09-13 10:15:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,949 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:39,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:39,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:39,951 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 10:15:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,027 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-09-13 10:15:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:40,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-13 10:15:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,029 INFO L225 Difference]: With dead ends: 62 [2024-09-13 10:15:40,029 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 10:15:40,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:40,030 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 64 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 10:15:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-09-13 10:15:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 10:15:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-09-13 10:15:40,039 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 32 [2024-09-13 10:15:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,041 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-09-13 10:15:40,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 10:15:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-09-13 10:15:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 10:15:40,042 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,042 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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, 1, 1] [2024-09-13 10:15:40,055 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 10:15:40,243 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:15:40,243 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232253, now seen corresponding path program 1 times [2024-09-13 10:15:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334795528] [2024-09-13 10:15:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:15:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:15:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:15:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:15:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 10:15:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:40,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334795528] [2024-09-13 10:15:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334795528] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:40,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534916837] [2024-09-13 10:15:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,388 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:40,389 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,498 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-09-13 10:15:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2024-09-13 10:15:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,500 INFO L225 Difference]: With dead ends: 55 [2024-09-13 10:15:40,500 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 10:15:40,500 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:15:40,501 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 10:15:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-13 10:15:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 10:15:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-09-13 10:15:40,505 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 50 [2024-09-13 10:15:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,506 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-09-13 10:15:40,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-09-13 10:15:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-13 10:15:40,507 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,507 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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, 1, 1, 1] [2024-09-13 10:15:40,507 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 10:15:40,507 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1746405951, now seen corresponding path program 1 times [2024-09-13 10:15:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425020316] [2024-09-13 10:15:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318009607] [2024-09-13 10:15:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:40,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:40,526 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:40,528 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:15:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 10:15:40,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:40,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425020316] [2024-09-13 10:15:40,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:40,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318009607] [2024-09-13 10:15:40,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318009607] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:40,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:15:40,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-13 10:15:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466539660] [2024-09-13 10:15:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:15:40,916 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,969 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2024-09-13 10:15:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:15:40,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2024-09-13 10:15:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,972 INFO L225 Difference]: With dead ends: 49 [2024-09-13 10:15:40,972 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 10:15:40,972 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:15:40,973 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 10:15:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-09-13 10:15:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:15:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2024-09-13 10:15:40,976 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 51 [2024-09-13 10:15:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,977 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2024-09-13 10:15:40,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2024-09-13 10:15:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-13 10:15:40,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,978 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1] [2024-09-13 10:15:40,990 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 10:15:41,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-13 10:15:41,180 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:41,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash -794580679, now seen corresponding path program 1 times [2024-09-13 10:15:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896039275] [2024-09-13 10:15:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103507281] [2024-09-13 10:15:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:41,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:41,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:41,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:15:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 10:15:41,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 10:15:41,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 10:15:41,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:41,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896039275] [2024-09-13 10:15:41,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103507281] [2024-09-13 10:15:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103507281] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:41,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:15:41,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-09-13 10:15:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066441576] [2024-09-13 10:15:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:41,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:41,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:15:41,586 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:15:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:41,617 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-09-13 10:15:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:15:41,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2024-09-13 10:15:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:41,618 INFO L225 Difference]: With dead ends: 40 [2024-09-13 10:15:41,618 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 10:15:41,619 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:15:41,619 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:41,619 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 10:15:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-13 10:15:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-09-13 10:15:41,622 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 56 [2024-09-13 10:15:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:41,622 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-09-13 10:15:41,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:15:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-09-13 10:15:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-13 10:15:41,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:41,623 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:41,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 10:15:41,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:41,824 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -469516360, now seen corresponding path program 1 times [2024-09-13 10:15:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56871904] [2024-09-13 10:15:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:15:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:15:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:15:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:15:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 10:15:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-13 10:15:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 10:15:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-09-13 10:15:41,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:41,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56871904] [2024-09-13 10:15:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56871904] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:41,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:41,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 10:15:41,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515640654] [2024-09-13 10:15:41,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:41,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:41,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:41,922 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 10:15:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:41,973 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-09-13 10:15:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2024-09-13 10:15:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:41,974 INFO L225 Difference]: With dead ends: 49 [2024-09-13 10:15:41,974 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:15:41,974 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:15:41,974 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:41,975 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:15:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-13 10:15:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:15:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-13 10:15:41,980 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 64 [2024-09-13 10:15:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:41,981 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-13 10:15:41,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 10:15:41,982 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-13 10:15:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-13 10:15:41,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:41,983 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:41,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-13 10:15:41,983 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:41,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash -471026589, now seen corresponding path program 1 times [2024-09-13 10:15:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802298576] [2024-09-13 10:15:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:42,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68872175] [2024-09-13 10:15:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:42,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:15:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:42,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 10:15:42,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-09-13 10:15:42,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:42,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802298576] [2024-09-13 10:15:42,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:42,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68872175] [2024-09-13 10:15:42,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68872175] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:42,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:15:42,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-13 10:15:42,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702479498] [2024-09-13 10:15:42,325 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 10:15:42,325 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:15:42,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:15:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:15:42,325 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-13 10:15:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:42,429 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2024-09-13 10:15:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 10:15:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 88 [2024-09-13 10:15:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:42,430 INFO L225 Difference]: With dead ends: 58 [2024-09-13 10:15:42,430 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:15:42,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:15:42,430 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:42,430 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:15:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:15:42,431 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 10:15:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:15:42,431 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2024-09-13 10:15:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:42,431 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:15:42,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-13 10:15:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:15:42,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:15:42,433 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-09-13 10:15:42,433 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (10 of 12 remaining) [2024-09-13 10:15:42,433 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (6 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-13 10:15:42,434 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-13 10:15:42,447 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 10:15:42,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 10:15:42,641 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:42,643 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:15:42,644 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-13 10:15:42,644 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-13 10:15:42,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:15:42 BoogieIcfgContainer [2024-09-13 10:15:42,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:15:42,645 INFO L158 Benchmark]: Toolchain (without parser) took 4528.63ms. Allocated memory was 138.4MB in the beginning and 213.9MB in the end (delta: 75.5MB). Free memory was 63.3MB in the beginning and 88.6MB in the end (delta: -25.3MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,645 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:15:42,645 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 138.4MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:15:42,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.26ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 63.1MB in the beginning and 147.8MB in the end (delta: -84.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.18ms. Allocated memory is still 178.3MB. Free memory was 147.8MB in the beginning and 145.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,645 INFO L158 Benchmark]: Boogie Preprocessor took 20.73ms. Allocated memory is still 178.3MB. Free memory was 145.7MB in the beginning and 144.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,646 INFO L158 Benchmark]: RCFGBuilder took 274.15ms. Allocated memory is still 178.3MB. Free memory was 144.5MB in the beginning and 128.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,646 INFO L158 Benchmark]: TraceAbstraction took 3957.83ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 88.6MB in the end (delta: 40.3MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. [2024-09-13 10:15:42,647 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 138.4MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.63ms. Allocated memory is still 138.4MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.26ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 63.1MB in the beginning and 147.8MB in the end (delta: -84.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.18ms. Allocated memory is still 178.3MB. Free memory was 147.8MB in the beginning and 145.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.73ms. Allocated memory is still 178.3MB. Free memory was 145.7MB in the beginning and 144.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 274.15ms. Allocated memory is still 178.3MB. Free memory was 144.5MB in the beginning and 128.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3957.83ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 88.6MB in the end (delta: 40.3MB). Peak memory consumption was 76.7MB. 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: 38]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 47]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 17]: 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: 14]: 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, 44 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 906 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 519 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 404 IncrementalHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 387 mSDtfsCounter, 404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, InterpolantAutomatonStates: 47, 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, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 512 ConstructedInterpolants, 0 QuantifiedInterpolants, 1809 SizeOfPredicates, 4 NumberOfNonLiveVariables, 648 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 689/703 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:15:42,661 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...