This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:44:56,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:44:56,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:44:56,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:44:56,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:44:56,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:44:56,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:44:56,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:44:56,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:44:56,706 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:44:56,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:44:56,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:44:56,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:44:56,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:44:56,708 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:44:56,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:44:56,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:44:56,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:44:56,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:44:56,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:44:56,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:44:56,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:44:56,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:44:56,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:44:56,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:44:56,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:44:56,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:44:56,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:44:56,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:44:56,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:44:56,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:44:56,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:44:56,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:44:56,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:44:56,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:44:56,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:44:56,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:44:56,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:44:56,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:44:56,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:44:56,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:44:56,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:44:56,940 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:44:56,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-20 13:44:58,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:44:58,423 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:44:58,424 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-20 13:44:58,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/197557ed1/0f76ab52916040b88431207621fb1316/FLAG92018444f [2024-09-20 13:44:58,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/197557ed1/0f76ab52916040b88431207621fb1316 [2024-09-20 13:44:58,440 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:44:58,441 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:44:58,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/ps6-ll_valuebound5.yml/witness-2.1.yml [2024-09-20 13:44:58,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:44:58,479 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:44:58,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:44:58,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:44:58,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:44:58,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:58" (1/2) ... [2024-09-20 13:44:58,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56059f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:58, skipping insertion in model container [2024-09-20 13:44:58,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:44:58" (1/2) ... [2024-09-20 13:44:58,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35572063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:44:58, skipping insertion in model container [2024-09-20 13:44:58,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:44:58" (2/2) ... [2024-09-20 13:44:58,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56059f29 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58, skipping insertion in model container [2024-09-20 13:44:58,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:44:58" (2/2) ... [2024-09-20 13:44:58,497 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:44:58,499 INFO L1541 ArrayList]: Loop invariant at [L28-L37] ((((((((((k <= 5) && ((k == 3) || (3 < k))) && (276 == x)) && (y == 3)) && (c == 3)) || (((((k <= 5) && ((1 < k) || (k == 1))) && (y == 1)) && (x == 1)) && (c == 1))) || (((((x == 33) && (y == 2)) && (k <= 5)) && ((k == 2) || (2 < k))) && (c == 2))) || (((((x == 0) && (k <= 5)) && (0 <= k)) && (c == 0)) && (y == 0))) || (((((k <= 5) && (0 <= k)) && (((__int128) y * y) == ((__int128) k * y))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && (5 <= c))) || (((((k <= 5) && (4 <= k)) && (y == 4)) && (c == 4)) && (1300 == x))) [2024-09-20 13:44:58,499 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (\old(cond) != 0) [2024-09-20 13:44:58,499 INFO L1541 ArrayList]: Function contract at [L9]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-20 13:44:58,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:44:58,665 WARN L248 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/ps6-ll_valuebound5.c[458,471] [2024-09-20 13:44:58,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:44:58,684 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-20 13:44:58,707 WARN L248 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/ps6-ll_valuebound5.c[458,471] Start Parsing Local [2024-09-20 13:44:58,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:44:58,734 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:44:58,735 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58 WrapperNode [2024-09-20 13:44:58,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:44:58,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:44:58,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:44:58,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:44:58,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,757 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-09-20 13:44:58,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:44:58,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:44:58,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:44:58,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:44:58,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,781 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 [2024-09-20 13:44:58,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:44:58,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:44:58,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:44:58,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:44:58,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (1/1) ... [2024-09-20 13:44:58,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:44:58,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:44:58,810 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) [2024-09-20 13:44:58,811 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 [2024-09-20 13:44:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:44:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 13:44:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 13:44:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-20 13:44:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:44:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:44:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:44:58,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:44:58,888 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:44:58,890 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:44:59,028 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-20 13:44:59,058 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-09-20 13:44:59,058 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:44:59,073 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:44:59,073 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 13:44:59,073 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:59 BoogieIcfgContainer [2024-09-20 13:44:59,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:44:59,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:44:59,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:44:59,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:44:59,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:44:58" (1/4) ... [2024-09-20 13:44:59,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51585e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:44:59, skipping insertion in model container [2024-09-20 13:44:59,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:44:58" (2/4) ... [2024-09-20 13:44:59,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51585e79 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:44:59, skipping insertion in model container [2024-09-20 13:44:59,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:44:58" (3/4) ... [2024-09-20 13:44:59,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51585e79 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:44:59, skipping insertion in model container [2024-09-20 13:44:59,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:44:59" (4/4) ... [2024-09-20 13:44:59,079 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2024-09-20 13:44:59,091 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:44:59,091 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-20 13:44:59,127 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:44:59,139 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;@42afb74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:44:59,139 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-20 13:44:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:44:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-20 13:44:59,153 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:44:59,153 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-20 13:44:59,154 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 4 more)] === [2024-09-20 13:44:59,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:44:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 93161522, now seen corresponding path program 1 times [2024-09-20 13:44:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:44:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820421298] [2024-09-20 13:44:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:44:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:44:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:44:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:44:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820421298] [2024-09-20 13:44:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820421298] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:44:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:44:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:44:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384417620] [2024-09-20 13:44:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:44:59,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 13:44:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:44:59,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 13:44:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 13:44:59,305 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-09-20 13:44:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:44:59,321 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-09-20 13:44:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 13:44:59,324 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 [2024-09-20 13:44:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:44:59,328 INFO L225 Difference]: With dead ends: 28 [2024-09-20 13:44:59,328 INFO L226 Difference]: Without dead ends: 26 [2024-09-20 13:44:59,330 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 [2024-09-20 13:44:59,332 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-20 13:44:59,333 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:44:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-20 13:44:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-20 13:44:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 13:44:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-20 13:44:59,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2024-09-20 13:44:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:44:59,355 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-20 13:44:59,355 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) [2024-09-20 13:44:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-20 13:44:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-20 13:44:59,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:44:59,356 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-20 13:44:59,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:44:59,356 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 4 more)] === [2024-09-20 13:44:59,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:44:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash 93161584, now seen corresponding path program 1 times [2024-09-20 13:44:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:44:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246641978] [2024-09-20 13:44:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:44:59,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:44:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:44:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:44:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246641978] [2024-09-20 13:44:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246641978] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:44:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:44:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:44:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660111124] [2024-09-20 13:44:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:44:59,415 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:44:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:44:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:44:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:44:59,416 INFO L87 Difference]: Start difference. First operand 26 states and 29 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) [2024-09-20 13:44:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:44:59,442 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-09-20 13:44:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:44:59,443 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 [2024-09-20 13:44:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:44:59,443 INFO L225 Difference]: With dead ends: 25 [2024-09-20 13:44:59,443 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 13:44:59,443 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 [2024-09-20 13:44:59,444 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:44:59,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:44:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 13:44:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-20 13:44:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 13:44:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-20 13:44:59,448 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2024-09-20 13:44:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:44:59,448 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-20 13:44:59,449 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) [2024-09-20 13:44:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-20 13:44:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 13:44:59,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:44:59,450 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:44:59,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:44:59,451 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:44:59,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:44:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash -985219255, now seen corresponding path program 1 times [2024-09-20 13:44:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:44:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245284249] [2024-09-20 13:44:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:44:59,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:44:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:44:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 13:44:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:44:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:44:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245284249] [2024-09-20 13:44:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245284249] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:44:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198205319] [2024-09-20 13:44:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:44:59,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:44:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:44:59,690 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) [2024-09-20 13:44:59,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:44:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:44:59,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 13:44:59,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:44:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:44:59,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:44:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:44:59,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198205319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:44:59,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:44:59,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-20 13:44:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172152847] [2024-09-20 13:44:59,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:44:59,869 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:44:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:44:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:44:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:44:59,870 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:44:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:44:59,959 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-09-20 13:44:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 13:44:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-20 13:44:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:44:59,960 INFO L225 Difference]: With dead ends: 31 [2024-09-20 13:44:59,961 INFO L226 Difference]: Without dead ends: 31 [2024-09-20 13:44:59,962 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:44:59,963 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:44:59,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:44:59,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-20 13:44:59,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-09-20 13:44:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:44:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-20 13:44:59,970 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2024-09-20 13:44:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:44:59,972 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-20 13:44:59,972 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:44:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-20 13:44:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-20 13:44:59,973 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:44:59,973 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:44:59,985 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:45:00,176 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 [2024-09-20 13:45:00,177 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:00,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:00,178 INFO L85 PathProgramCache]: Analyzing trace with hash 56458865, now seen corresponding path program 1 times [2024-09-20 13:45:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078794686] [2024-09-20 13:45:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:45:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 13:45:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:45:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:00,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078794686] [2024-09-20 13:45:00,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078794686] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:45:00,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:45:00,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:45:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103909050] [2024-09-20 13:45:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:45:00,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:45:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:45:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:45:00,274 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:45:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:00,292 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-09-20 13:45:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:45:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-20 13:45:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:00,298 INFO L225 Difference]: With dead ends: 26 [2024-09-20 13:45:00,298 INFO L226 Difference]: Without dead ends: 26 [2024-09-20 13:45:00,298 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 [2024-09-20 13:45:00,299 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 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 [2024-09-20 13:45:00,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-20 13:45:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-20 13:45:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:45:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-20 13:45:00,314 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2024-09-20 13:45:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:00,314 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-20 13:45:00,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:45:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-20 13:45:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-20 13:45:00,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:00,316 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:00,316 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 13:45:00,316 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:00,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash 56459026, now seen corresponding path program 1 times [2024-09-20 13:45:00,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:00,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667573516] [2024-09-20 13:45:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:45:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 13:45:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:45:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667573516] [2024-09-20 13:45:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667573516] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:45:00,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:45:00,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:45:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131090179] [2024-09-20 13:45:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:45:00,383 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:45:00,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:45:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:45:00,387 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:45:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:00,425 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-20 13:45:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:45:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-20 13:45:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:00,426 INFO L225 Difference]: With dead ends: 25 [2024-09-20 13:45:00,426 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 13:45:00,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:45:00,427 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:00,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 13:45:00,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-20 13:45:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:45:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-20 13:45:00,430 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2024-09-20 13:45:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:00,430 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-20 13:45:00,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:45:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-20 13:45:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:45:00,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:00,431 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:00,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-20 13:45:00,432 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:00,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1656305996, now seen corresponding path program 1 times [2024-09-20 13:45:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441345240] [2024-09-20 13:45:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:45:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 13:45:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 13:45:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:45:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441345240] [2024-09-20 13:45:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441345240] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:45:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:45:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:45:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447254541] [2024-09-20 13:45:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:45:00,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:45:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:45:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:45:00,487 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-20 13:45:04,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:45:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:04,777 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-20 13:45:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:45:04,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 21 [2024-09-20 13:45:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:04,779 INFO L225 Difference]: With dead ends: 23 [2024-09-20 13:45:04,783 INFO L226 Difference]: Without dead ends: 23 [2024-09-20 13:45:04,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:45:04,784 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:04,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-20 13:45:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-20 13:45:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-20 13:45:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 13:45:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-20 13:45:04,793 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 21 [2024-09-20 13:45:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:04,793 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-20 13:45:04,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-20 13:45:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-20 13:45:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:45:04,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:04,794 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:04,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-20 13:45:04,794 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:04,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1656305955, now seen corresponding path program 1 times [2024-09-20 13:45:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855405069] [2024-09-20 13:45:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:45:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514969620] [2024-09-20 13:45:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:04,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:45:04,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:45:04,817 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) [2024-09-20 13:45:04,818 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:45:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:04,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-20 13:45:04,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:45:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:45:04,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:45:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:45:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855405069] [2024-09-20 13:45:05,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:45:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514969620] [2024-09-20 13:45:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514969620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:45:05,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:45:05,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-20 13:45:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558716221] [2024-09-20 13:45:05,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:45:05,235 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:45:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:45:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:45:05,236 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-20 13:45:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:05,277 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-09-20 13:45:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:45:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2024-09-20 13:45:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:05,278 INFO L225 Difference]: With dead ends: 30 [2024-09-20 13:45:05,278 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:45:05,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:45:05,279 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:05,279 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:45:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-09-20 13:45:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:45:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-20 13:45:05,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 21 [2024-09-20 13:45:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:05,283 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-20 13:45:05,283 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-20 13:45:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-20 13:45:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 13:45:05,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:05,284 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:05,296 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 13:45:05,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 13:45:05,488 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:05,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash 282739407, now seen corresponding path program 1 times [2024-09-20 13:45:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:05,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146520045] [2024-09-20 13:45:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:45:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131254936] [2024-09-20 13:45:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:45:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:45:05,501 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) [2024-09-20 13:45:05,502 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:45:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:05,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-20 13:45:05,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:45:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-20 13:45:05,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:45:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146520045] [2024-09-20 13:45:05,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:45:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131254936] [2024-09-20 13:45:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131254936] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:45:05,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:45:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:45:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077613013] [2024-09-20 13:45:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:45:05,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:45:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:45:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:45:05,587 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:45:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:05,609 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-20 13:45:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:45:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-20 13:45:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:05,610 INFO L225 Difference]: With dead ends: 27 [2024-09-20 13:45:05,610 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 13:45:05,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:45:05,611 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:05,611 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 13:45:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-20 13:45:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:45:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-20 13:45:05,616 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 26 [2024-09-20 13:45:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:05,616 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-20 13:45:05,616 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:45:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-20 13:45:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 13:45:05,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:05,617 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:05,641 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:45:05,817 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 [2024-09-20 13:45:05,818 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 199228017, now seen corresponding path program 2 times [2024-09-20 13:45:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30153850] [2024-09-20 13:45:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:45:05,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046623677] [2024-09-20 13:45:05,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:45:05,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:45:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:45:05,847 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) [2024-09-20 13:45:05,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:45:05,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:45:05,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:45:05,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-20 13:45:05,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:45:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-20 13:45:05,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:45:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-20 13:45:06,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:06,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30153850] [2024-09-20 13:45:06,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:45:06,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046623677] [2024-09-20 13:45:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046623677] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:45:06,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:45:06,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-09-20 13:45:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076370824] [2024-09-20 13:45:06,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:45:06,187 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 13:45:06,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 13:45:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:45:06,188 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-20 13:45:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:06,237 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-09-20 13:45:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:45:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-09-20 13:45:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:06,238 INFO L225 Difference]: With dead ends: 32 [2024-09-20 13:45:06,238 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 13:45:06,238 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:45:06,238 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:06,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 103 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 13:45:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-09-20 13:45:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:45:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-09-20 13:45:06,241 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 29 [2024-09-20 13:45:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:06,241 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-09-20 13:45:06,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-20 13:45:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-09-20 13:45:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-20 13:45:06,242 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:06,242 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:06,257 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 13:45:06,446 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 [2024-09-20 13:45:06,447 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:06,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash -577360965, now seen corresponding path program 1 times [2024-09-20 13:45:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:06,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264889157] [2024-09-20 13:45:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:45:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709269305] [2024-09-20 13:45:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:06,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:45:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:45:06,460 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) [2024-09-20 13:45:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:45:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:45:06,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:45:06,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:45:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-20 13:45:06,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:45:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-20 13:45:06,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264889157] [2024-09-20 13:45:06,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:45:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709269305] [2024-09-20 13:45:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709269305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:45:06,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:45:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-09-20 13:45:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858964187] [2024-09-20 13:45:06,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:45:06,620 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:45:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:45:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:45:06,620 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 13:45:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:06,688 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-09-20 13:45:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:45:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 34 [2024-09-20 13:45:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:06,689 INFO L225 Difference]: With dead ends: 34 [2024-09-20 13:45:06,689 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:45:06,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:45:06,690 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:06,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:45:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2024-09-20 13:45:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:45:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-20 13:45:06,692 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 34 [2024-09-20 13:45:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:06,694 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-20 13:45:06,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 13:45:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-20 13:45:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 13:45:06,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:45:06,695 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:06,708 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 13:45:06,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 13:45:06,897 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:45:06,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:45:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 723933701, now seen corresponding path program 3 times [2024-09-20 13:45:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:45:06,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870752165] [2024-09-20 13:45:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:45:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:45:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:45:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866846279] [2024-09-20 13:45:06,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:45:06,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:45:06,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:45:06,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:45:06,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:45:06,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 13:45:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:45:06,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 13:45:06,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:45:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-20 13:45:07,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:45:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-20 13:45:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:45:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870752165] [2024-09-20 13:45:08,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:45:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866846279] [2024-09-20 13:45:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866846279] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:45:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:45:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-09-20 13:45:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093648110] [2024-09-20 13:45:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:45:08,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:45:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:45:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:45:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:45:08,031 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:45:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:45:08,047 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-09-20 13:45:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:45:08,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-09-20 13:45:08,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:45:08,047 INFO L225 Difference]: With dead ends: 25 [2024-09-20 13:45:08,047 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:45:08,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:45:08,048 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:45:08,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:45:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:45:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:45:08,049 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) [2024-09-20 13:45:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:45:08,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2024-09-20 13:45:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:45:08,049 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:45:08,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:45:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:45:08,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:45:08,051 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (5 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (4 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (3 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-09-20 13:45:08,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 7 remaining) [2024-09-20 13:45:08,066 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 13:45:08,256 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:45:08,259 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:45:08,260 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:45:08,262 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-20 13:45:08,262 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-20 13:45:08,262 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:45:08 BoogieIcfgContainer [2024-09-20 13:45:08,262 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:45:08,263 INFO L158 Benchmark]: Toolchain (without parser) took 9783.40ms. Allocated memory was 178.3MB in the beginning and 255.9MB in the end (delta: 77.6MB). Free memory was 105.2MB in the beginning and 83.3MB in the end (delta: 21.9MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. [2024-09-20 13:45:08,263 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:45:08,263 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:45:08,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.87ms. Allocated memory is still 178.3MB. Free memory was 104.9MB in the beginning and 138.8MB in the end (delta: -33.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-20 13:45:08,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.10ms. Allocated memory is still 178.3MB. Free memory was 138.8MB in the beginning and 137.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:45:08,264 INFO L158 Benchmark]: Boogie Preprocessor took 29.73ms. Allocated memory is still 178.3MB. Free memory was 137.6MB in the beginning and 135.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:45:08,264 INFO L158 Benchmark]: RCFGBuilder took 285.36ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 119.9MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-20 13:45:08,264 INFO L158 Benchmark]: TraceAbstraction took 9187.76ms. Allocated memory was 178.3MB in the beginning and 255.9MB in the end (delta: 77.6MB). Free memory was 119.1MB in the beginning and 83.3MB in the end (delta: 35.8MB). Peak memory consumption was 115.1MB. Max. memory is 16.1GB. [2024-09-20 13:45:08,265 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.87ms. Allocated memory is still 178.3MB. Free memory was 104.9MB in the beginning and 138.8MB in the end (delta: -33.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.10ms. Allocated memory is still 178.3MB. Free memory was 138.8MB in the beginning and 137.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.73ms. Allocated memory is still 178.3MB. Free memory was 137.6MB in the beginning and 135.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.36ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 119.9MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9187.76ms. Allocated memory was 178.3MB in the beginning and 255.9MB in the end (delta: 77.6MB). Free memory was 119.1MB in the beginning and 83.3MB in the end (delta: 35.8MB). Peak memory consumption was 115.1MB. 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: 28]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 6]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 12]: 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: 9]: 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, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 547 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 328 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 219 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=9, InterpolantAutomatonStates: 50, 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, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 387 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 357 ConstructedInterpolants, 0 QuantifiedInterpolants, 2169 SizeOfPredicates, 9 NumberOfNonLiveVariables, 468 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 138/172 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:45:08,280 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...