This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:10:46,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:10:46,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:10:46,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:10:46,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:10:46,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:10:46,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:10:46,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:10:46,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:10:46,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:10:46,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:10:46,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:10:46,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:10:46,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:10:46,643 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:10:46,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:10:46,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:10:46,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:10:46,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:10:46,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:10:46,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:10:46,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:10:46,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:10:46,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:10:46,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:10:46,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:10:46,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:10:46,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:10:46,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:10:46,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:10:46,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:10:46,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:10:46,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:46,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:10:46,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:10:46,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:10:46,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:10:46,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:10:46,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:10:46,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:10:46,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:10:46,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:10:46,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:10:46,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:10:46,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:10:46,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:10:46,925 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:10:46,925 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:10:46,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/gj2007.yml/witness-2.1.yml [2024-09-15 20:10:46,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:10:46,971 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:10:46,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/gj2007.i [2024-09-15 20:10:48,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:10:48,322 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:10:48,323 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.i [2024-09-15 20:10:48,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/60b4cbf2c/32de2fd7117b4b8780b2c03c98fe46bd/FLAG6be89259f [2024-09-15 20:10:48,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/60b4cbf2c/32de2fd7117b4b8780b2c03c98fe46bd [2024-09-15 20:10:48,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:10:48,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:10:48,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:48,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:10:48,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:10:48,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:46" (1/2) ... [2024-09-15 20:10:48,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c282e8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:48, skipping insertion in model container [2024-09-15 20:10:48,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:46" (1/2) ... [2024-09-15 20:10:48,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b26f36e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:48, skipping insertion in model container [2024-09-15 20:10:48,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:48" (2/2) ... [2024-09-15 20:10:48,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c282e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48, skipping insertion in model container [2024-09-15 20:10:48,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:48" (2/2) ... [2024-09-15 20:10:48,751 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:10:48,753 INFO L1541 ArrayList]: Loop invariant at [L27-L34] ((((((((((((((((((((((((((((((((((((((((((((((((((((x == 80) && (y == 80)) || ((x == 83) && (y == 83))) || ((67 == x) && (67 == y))) || ((x == 75) && (y == 75))) || ((x == 65) && (y == 65))) || ((66 == y) && (66 == x))) || ((94 == x) && (94 == y))) || ((81 == y) && (81 == x))) || ((57 == y) && (57 == x))) || ((51 == x) && (51 == y))) || ((y == 79) && (x == 79))) || ((y == 54) && (x == 54))) || ((98 == y) && (98 == x))) || ((x == 96) && (y == 96))) || ((92 == y) && (92 == x))) || ((y == 82) && (x == 82))) || ((77 == x) && (77 == y))) || ((88 == y) && (88 == x))) || ((x == 63) && (y == 63))) || ((59 == y) && (59 == x))) || ((x == 60) && (y == 60))) || ((y == 55) && (x == 55))) || ((y == 71) && (x == 71))) || ((x == 58) && (y == 58))) || ((y == 50) && (x <= 50))) || ((y == 62) && (x == 62))) || ((64 == y) && (64 == x))) || ((76 == y) && (76 == x))) || ((y == 93) && (x == 93))) || ((x == 69) && (y == 69))) || ((97 == x) && (97 == y))) || ((x == 61) && (y == 61))) || ((87 == y) && (87 == x))) || ((53 == y) && (53 == x))) || ((x == 70) && (y == 70))) || ((72 == y) && (72 == x))) || ((91 == y) && (91 == x))) || ((x == 74) && (y == 74))) || ((x == 52) && (y == 52))) || ((y == 99) && (x == 99))) || ((x == 73) && (y == 73))) || ((56 == y) && (56 == x))) || ((x == 78) && (y == 78))) || ((100 <= x) && (y == 100))) || ((84 == y) && (84 == x))) || ((68 == y) && (68 == x))) || ((95 == x) && (95 == y))) || ((y == 86) && (x == 86))) || ((x == 90) && (y == 90))) || ((y == 85) && (x == 85))) || ((x == 89) && (y == 89))) [2024-09-15 20:10:48,753 INFO L1541 ArrayList]: Function contract at [L17]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:10:48,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:10:48,903 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/loop-lit/gj2007.i[895,908] [2024-09-15 20:10:48,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:48,923 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:10:48,953 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/loop-lit/gj2007.i[895,908] Start Parsing Local [2024-09-15 20:10:48,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:48,980 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:10:48,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48 WrapperNode [2024-09-15 20:10:48,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:48,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:48,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:10:48,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:10:48,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:48,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,021 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-09-15 20:10:49,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:49,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:10:49,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:10:49,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:10:49,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,033 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,041 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 20:10:49,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:10:49,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:10:49,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:10:49,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:10:49,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (1/1) ... [2024-09-15 20:10:49,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:49,086 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) [2024-09-15 20:10:49,090 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 [2024-09-15 20:10:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:10:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:10:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:10:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:10:49,171 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:10:49,173 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:10:49,369 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-15 20:10:49,370 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:10:49,393 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:10:49,393 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:10:49,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:49 BoogieIcfgContainer [2024-09-15 20:10:49,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:10:49,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:10:49,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:10:49,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:10:49,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:46" (1/4) ... [2024-09-15 20:10:49,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fba22d7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:10:49, skipping insertion in model container [2024-09-15 20:10:49,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:10:48" (2/4) ... [2024-09-15 20:10:49,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fba22d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:49, skipping insertion in model container [2024-09-15 20:10:49,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:48" (3/4) ... [2024-09-15 20:10:49,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fba22d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:49, skipping insertion in model container [2024-09-15 20:10:49,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:49" (4/4) ... [2024-09-15 20:10:49,403 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.i [2024-09-15 20:10:49,416 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:10:49,416 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-15 20:10:49,470 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:10:49,476 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;@22ab3ecb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:10:49,477 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-15 20:10:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 13 states have internal predecessors, (17), 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) [2024-09-15 20:10:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-15 20:10:49,484 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:49,485 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-15 20:10:49,485 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:49,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2267, now seen corresponding path program 1 times [2024-09-15 20:10:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459896527] [2024-09-15 20:10:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459896527] [2024-09-15 20:10:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459896527] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:10:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354604369] [2024-09-15 20:10:49,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:49,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:10:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:10:49,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:49,780 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-15 20:10:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:49,848 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-09-15 20:10:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:10:49,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-15 20:10:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:49,857 INFO L225 Difference]: With dead ends: 17 [2024-09-15 20:10:49,858 INFO L226 Difference]: Without dead ends: 16 [2024-09-15 20:10:49,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:49,863 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:49,864 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-15 20:10:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-15 20:10:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-09-15 20:10:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-15 20:10:49,885 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 2 [2024-09-15 20:10:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:49,885 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-15 20:10:49,885 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-15 20:10:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-15 20:10:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:10:49,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:49,886 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:10:49,886 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:10:49,886 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:49,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 67578981, now seen corresponding path program 1 times [2024-09-15 20:10:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200236857] [2024-09-15 20:10:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:50,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200236857] [2024-09-15 20:10:50,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200236857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:50,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746778652] [2024-09-15 20:10:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:50,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:50,015 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) [2024-09-15 20:10:50,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:10:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:50,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:10:50,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746778652] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:50,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-09-15 20:10:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603365810] [2024-09-15 20:10:50,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:50,191 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:10:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:10:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:10:50,191 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-09-15 20:10:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:50,272 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-15 20:10:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:10:50,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:10:50,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:50,273 INFO L225 Difference]: With dead ends: 25 [2024-09-15 20:10:50,273 INFO L226 Difference]: Without dead ends: 25 [2024-09-15 20:10:50,274 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:10:50,274 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:50,275 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-15 20:10:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-15 20:10:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 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) [2024-09-15 20:10:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-09-15 20:10:50,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2024-09-15 20:10:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:50,278 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-09-15 20:10:50,278 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-09-15 20:10:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-09-15 20:10:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 20:10:50,278 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:50,278 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1] [2024-09-15 20:10:50,294 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:10:50,482 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:50,483 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:50,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1381240679, now seen corresponding path program 1 times [2024-09-15 20:10:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401449464] [2024-09-15 20:10:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401449464] [2024-09-15 20:10:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401449464] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44064564] [2024-09-15 20:10:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:50,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:50,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:50,668 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) [2024-09-15 20:10:50,669 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:10:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:50,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:10:50,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:50,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44064564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:50,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-15 20:10:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608039927] [2024-09-15 20:10:50,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:50,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 20:10:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 20:10:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:10:50,804 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 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) [2024-09-15 20:10:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:50,866 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-09-15 20:10:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 20:10:50,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-15 20:10:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:50,867 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:10:50,867 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:10:50,868 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:10:50,868 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:50,869 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:10:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 20:10:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 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) [2024-09-15 20:10:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-09-15 20:10:50,879 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 14 [2024-09-15 20:10:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:50,880 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-09-15 20:10:50,880 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 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) [2024-09-15 20:10:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-09-15 20:10:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-15 20:10:50,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:50,882 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1] [2024-09-15 20:10:50,896 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 20:10:51,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:51,087 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:51,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1429193309, now seen corresponding path program 2 times [2024-09-15 20:10:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:51,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841487347] [2024-09-15 20:10:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:51,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841487347] [2024-09-15 20:10:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841487347] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666236577] [2024-09-15 20:10:51,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:10:51,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:51,453 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) [2024-09-15 20:10:51,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:10:51,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:10:51,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:10:51,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-15 20:10:51,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:51,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666236577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:51,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-09-15 20:10:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689686040] [2024-09-15 20:10:51,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:51,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-15 20:10:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-15 20:10:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-15 20:10:51,718 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 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) [2024-09-15 20:10:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:51,814 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-09-15 20:10:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 20:10:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-09-15 20:10:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:51,815 INFO L225 Difference]: With dead ends: 70 [2024-09-15 20:10:51,816 INFO L226 Difference]: Without dead ends: 70 [2024-09-15 20:10:51,816 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-15 20:10:51,817 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:51,817 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-15 20:10:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-15 20:10:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 69 states have internal predecessors, (72), 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) [2024-09-15 20:10:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2024-09-15 20:10:51,822 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 29 [2024-09-15 20:10:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:51,823 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2024-09-15 20:10:51,823 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 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) [2024-09-15 20:10:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2024-09-15 20:10:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-15 20:10:51,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:51,826 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1] [2024-09-15 20:10:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 20:10:52,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:52,030 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:52,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 739400419, now seen corresponding path program 3 times [2024-09-15 20:10:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234573010] [2024-09-15 20:10:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 19 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:52,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234573010] [2024-09-15 20:10:52,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234573010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215860315] [2024-09-15 20:10:52,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:10:52,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:52,858 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) [2024-09-15 20:10:52,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:10:52,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:10:52,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:10:52,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-15 20:10:52,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 54 proven. 19 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-15 20:10:53,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-15 20:10:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215860315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:53,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 3, 3] total 24 [2024-09-15 20:10:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27884066] [2024-09-15 20:10:53,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:53,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 20:10:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 20:10:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:10:53,146 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 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) [2024-09-15 20:10:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:53,482 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-09-15 20:10:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-15 20:10:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-09-15 20:10:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:53,484 INFO L225 Difference]: With dead ends: 76 [2024-09-15 20:10:53,484 INFO L226 Difference]: Without dead ends: 76 [2024-09-15 20:10:53,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 20:10:53,486 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:53,486 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-15 20:10:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-09-15 20:10:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 75 states have internal predecessors, (78), 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) [2024-09-15 20:10:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2024-09-15 20:10:53,493 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 59 [2024-09-15 20:10:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:53,493 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2024-09-15 20:10:53,495 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 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) [2024-09-15 20:10:53,495 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2024-09-15 20:10:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-15 20:10:53,496 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:53,496 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 19, 2, 1, 1] [2024-09-15 20:10:53,510 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 20:10:53,697 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:53,698 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:53,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1411357147, now seen corresponding path program 4 times [2024-09-15 20:10:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:53,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338958554] [2024-09-15 20:10:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:54,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:54,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338958554] [2024-09-15 20:10:54,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338958554] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:54,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758026430] [2024-09-15 20:10:54,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 20:10:54,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:54,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:54,432 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) [2024-09-15 20:10:54,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:10:54,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 20:10:54,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:10:54,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 20:10:54,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:54,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758026430] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:55,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2024-09-15 20:10:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138244248] [2024-09-15 20:10:55,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:55,049 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-15 20:10:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-15 20:10:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-15 20:10:55,052 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 43 states, 43 states have (on average 3.0232558139534884) internal successors, (130), 42 states have internal predecessors, (130), 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) [2024-09-15 20:10:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:55,236 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2024-09-15 20:10:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-15 20:10:55,239 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0232558139534884) internal successors, (130), 42 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-09-15 20:10:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:55,241 INFO L225 Difference]: With dead ends: 139 [2024-09-15 20:10:55,244 INFO L226 Difference]: Without dead ends: 139 [2024-09-15 20:10:55,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-15 20:10:55,245 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:55,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:10:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-15 20:10:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-09-15 20:10:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 135 states have (on average 1.0444444444444445) internal successors, (141), 138 states have internal predecessors, (141), 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) [2024-09-15 20:10:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2024-09-15 20:10:55,255 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 65 [2024-09-15 20:10:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:55,255 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2024-09-15 20:10:55,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0232558139534884) internal successors, (130), 42 states have internal predecessors, (130), 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) [2024-09-15 20:10:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2024-09-15 20:10:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-15 20:10:55,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:55,256 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 40, 2, 1, 1] [2024-09-15 20:10:55,270 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 20:10:55,456 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:10:55,457 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:55,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -166158629, now seen corresponding path program 5 times [2024-09-15 20:10:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893210830] [2024-09-15 20:10:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893210830] [2024-09-15 20:10:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893210830] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103047065] [2024-09-15 20:10:57,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 20:10:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:57,728 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) [2024-09-15 20:10:57,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:10:57,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-15 20:10:57,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:10:57,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 20:10:57,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:58,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103047065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:59,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:59,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 52 [2024-09-15 20:10:59,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257173359] [2024-09-15 20:10:59,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:59,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-15 20:10:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-15 20:10:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-15 20:10:59,028 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 52 states have internal predecessors, (161), 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) [2024-09-15 20:10:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:59,272 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-09-15 20:10:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-15 20:10:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 52 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-09-15 20:10:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:59,273 INFO L225 Difference]: With dead ends: 169 [2024-09-15 20:10:59,273 INFO L226 Difference]: Without dead ends: 169 [2024-09-15 20:10:59,274 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 213 SyntacticMatches, 32 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-15 20:10:59,275 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:59,275 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:10:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-15 20:10:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-09-15 20:10:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.0363636363636364) internal successors, (171), 168 states have internal predecessors, (171), 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) [2024-09-15 20:10:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2024-09-15 20:10:59,281 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 128 [2024-09-15 20:10:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:59,281 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2024-09-15 20:10:59,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 52 states have internal predecessors, (161), 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) [2024-09-15 20:10:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2024-09-15 20:10:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-15 20:10:59,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:59,286 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 50, 2, 1, 1] [2024-09-15 20:10:59,302 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 20:10:59,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:59,487 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2104395365, now seen corresponding path program 6 times [2024-09-15 20:10:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134628477] [2024-09-15 20:10:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:03,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134628477] [2024-09-15 20:11:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134628477] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344319797] [2024-09-15 20:11:03,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 20:11:03,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:03,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:03,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:03,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 20:11:03,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-15 20:11:03,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:03,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 20:11:03,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 3825 trivial. 0 not checked. [2024-09-15 20:11:03,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 3825 trivial. 0 not checked. [2024-09-15 20:11:18,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344319797] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:18,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:18,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 4, 5] total 58 [2024-09-15 20:11:18,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702304533] [2024-09-15 20:11:18,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:18,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-15 20:11:18,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-15 20:11:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2040, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 20:11:18,776 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 59 states have internal predecessors, (171), 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) [2024-09-15 20:11:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:19,006 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2024-09-15 20:11:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-15 20:11:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 59 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-09-15 20:11:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:19,007 INFO L225 Difference]: With dead ends: 172 [2024-09-15 20:11:19,007 INFO L226 Difference]: Without dead ends: 172 [2024-09-15 20:11:19,008 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1500, Invalid=2040, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 20:11:19,008 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:19,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:11:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-15 20:11:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-09-15 20:11:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.0357142857142858) internal successors, (174), 171 states have internal predecessors, (174), 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) [2024-09-15 20:11:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2024-09-15 20:11:19,014 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 158 [2024-09-15 20:11:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:19,015 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2024-09-15 20:11:19,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.8983050847457625) internal successors, (171), 59 states have internal predecessors, (171), 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) [2024-09-15 20:11:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2024-09-15 20:11:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-09-15 20:11:19,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:19,017 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 50, 3, 1, 1] [2024-09-15 20:11:19,029 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 20:11:19,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:19,217 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:19,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1595343843, now seen corresponding path program 7 times [2024-09-15 20:11:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802586011] [2024-09-15 20:11:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802586011] [2024-09-15 20:11:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802586011] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542110583] [2024-09-15 20:11:23,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 20:11:23,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:23,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:23,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:23,296 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 20:11:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:23,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 20:11:23,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 100 proven. 362 refuted. 0 times theorem prover too weak. 3725 trivial. 0 not checked. [2024-09-15 20:11:23,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 3725 trivial. 0 not checked. [2024-09-15 20:11:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542110583] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:38,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 5, 6] total 58 [2024-09-15 20:11:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879091033] [2024-09-15 20:11:38,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:38,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-15 20:11:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-15 20:11:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1942, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 20:11:38,304 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 59 states have internal predecessors, (173), 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) [2024-09-15 20:11:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:38,553 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2024-09-15 20:11:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-15 20:11:38,554 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 59 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-09-15 20:11:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:38,554 INFO L225 Difference]: With dead ends: 175 [2024-09-15 20:11:38,554 INFO L226 Difference]: Without dead ends: 175 [2024-09-15 20:11:38,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1598, Invalid=1942, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 20:11:38,556 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:38,556 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:11:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-15 20:11:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-09-15 20:11:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.0350877192982457) internal successors, (177), 174 states have internal predecessors, (177), 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) [2024-09-15 20:11:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2024-09-15 20:11:38,561 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 161 [2024-09-15 20:11:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:38,563 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2024-09-15 20:11:38,563 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.9322033898305087) internal successors, (173), 59 states have internal predecessors, (173), 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) [2024-09-15 20:11:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2024-09-15 20:11:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-15 20:11:38,565 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:38,565 INFO L216 NwaCegarLoop]: trace histogram [54, 54, 50, 4, 1, 1] [2024-09-15 20:11:38,580 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-15 20:11:38,765 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:38,765 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:38,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1219627877, now seen corresponding path program 8 times [2024-09-15 20:11:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:38,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494290414] [2024-09-15 20:11:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:42,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:42,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494290414] [2024-09-15 20:11:42,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494290414] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:42,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900102824] [2024-09-15 20:11:42,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:11:42,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:42,716 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 20:11:42,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:11:42,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:42,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-15 20:11:42,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:44,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900102824] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:44,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 105 [2024-09-15 20:11:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482148797] [2024-09-15 20:11:44,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:44,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-15 20:11:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:44,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-15 20:11:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2761, Invalid=8581, Unknown=0, NotChecked=0, Total=11342 [2024-09-15 20:11:44,313 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand has 107 states, 106 states have (on average 2.9716981132075473) internal successors, (315), 106 states have internal predecessors, (315), 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) [2024-09-15 20:11:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:45,959 INFO L93 Difference]: Finished difference Result 178 states and 179 transitions. [2024-09-15 20:11:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-15 20:11:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.9716981132075473) internal successors, (315), 106 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-09-15 20:11:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:45,960 INFO L225 Difference]: With dead ends: 178 [2024-09-15 20:11:45,961 INFO L226 Difference]: Without dead ends: 178 [2024-09-15 20:11:45,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2761, Invalid=8581, Unknown=0, NotChecked=0, Total=11342 [2024-09-15 20:11:45,964 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 5948 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 5951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:45,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5948 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-15 20:11:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-15 20:11:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-09-15 20:11:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.028735632183908) internal successors, (179), 177 states have internal predecessors, (179), 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) [2024-09-15 20:11:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2024-09-15 20:11:45,969 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 164 [2024-09-15 20:11:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:45,969 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2024-09-15 20:11:45,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.9716981132075473) internal successors, (315), 106 states have internal predecessors, (315), 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) [2024-09-15 20:11:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2024-09-15 20:11:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-09-15 20:11:45,971 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:45,971 INFO L216 NwaCegarLoop]: trace histogram [55, 55, 50, 5, 1, 1] [2024-09-15 20:11:45,987 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-15 20:11:46,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-15 20:11:46,172 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:46,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1489283299, now seen corresponding path program 9 times [2024-09-15 20:11:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215271708] [2024-09-15 20:11:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215271708] [2024-09-15 20:11:50,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215271708] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558712706] [2024-09-15 20:11:50,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:11:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:50,129 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:50,130 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-15 20:11:50,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:11:50,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:50,193 WARN L260 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-15 20:11:50,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 4293 trivial. 0 not checked. [2024-09-15 20:11:52,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:11:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558712706] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:11:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [56] total 61 [2024-09-15 20:11:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14692960] [2024-09-15 20:11:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:52,441 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:11:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:11:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2024-09-15 20:11:52,442 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-09-15 20:11:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:53,308 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2024-09-15 20:11:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:11:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-09-15 20:11:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:53,309 INFO L225 Difference]: With dead ends: 177 [2024-09-15 20:11:53,309 INFO L226 Difference]: Without dead ends: 177 [2024-09-15 20:11:53,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1430, Invalid=2476, Unknown=0, NotChecked=0, Total=3906 [2024-09-15 20:11:53,310 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:53,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-15 20:11:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2024-09-15 20:11:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 175 states have internal predecessors, (176), 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) [2024-09-15 20:11:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2024-09-15 20:11:53,314 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 167 [2024-09-15 20:11:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:53,314 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2024-09-15 20:11:53,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-09-15 20:11:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2024-09-15 20:11:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-15 20:11:53,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:53,315 INFO L216 NwaCegarLoop]: trace histogram [56, 55, 50, 5, 1, 1, 1, 1] [2024-09-15 20:11:53,329 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-15 20:11:53,519 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 20:11:53,520 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:53,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 226633928, now seen corresponding path program 1 times [2024-09-15 20:11:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523167263] [2024-09-15 20:11:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4510 trivial. 0 not checked. [2024-09-15 20:11:57,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:57,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523167263] [2024-09-15 20:11:57,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523167263] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:57,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:57,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:11:57,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31382553] [2024-09-15 20:11:57,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:57,964 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:11:57,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:57,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:11:57,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:11:57,965 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 20:11:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:57,978 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2024-09-15 20:11:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:11:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-09-15 20:11:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:57,979 INFO L225 Difference]: With dead ends: 174 [2024-09-15 20:11:57,979 INFO L226 Difference]: Without dead ends: 173 [2024-09-15 20:11:57,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:11:57,980 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:57,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-15 20:11:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-15 20:11:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 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) [2024-09-15 20:11:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2024-09-15 20:11:57,985 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2024-09-15 20:11:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:57,985 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2024-09-15 20:11:57,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 20:11:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2024-09-15 20:11:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-15 20:11:57,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:57,987 INFO L216 NwaCegarLoop]: trace histogram [56, 55, 50, 5, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:57,987 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-15 20:11:57,987 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:57,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1248125429, now seen corresponding path program 1 times [2024-09-15 20:11:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529357246] [2024-09-15 20:11:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4565 trivial. 0 not checked. [2024-09-15 20:11:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529357246] [2024-09-15 20:11:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529357246] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:11:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961909895] [2024-09-15 20:11:58,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:58,448 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:11:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:11:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:58,449 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-15 20:11:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:58,450 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2024-09-15 20:11:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:11:58,451 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-09-15 20:11:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:58,451 INFO L225 Difference]: With dead ends: 171 [2024-09-15 20:11:58,451 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:11:58,451 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:58,452 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:58,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:11:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:11:58,452 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) [2024-09-15 20:11:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:11:58,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2024-09-15 20:11:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:58,453 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:11:58,453 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), 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) [2024-09-15 20:11:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:11:58,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:11:58,455 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-15 20:11:58,456 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-15 20:11:58,456 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-15 20:11:58,456 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-15 20:11:58,456 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-15 20:11:58,459 INFO L408 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2024-09-15 20:11:58,460 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:11:58,461 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:11:58,461 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:11:58,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:11:58 BoogieIcfgContainer [2024-09-15 20:11:58,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:11:58,462 INFO L158 Benchmark]: Toolchain (without parser) took 69723.93ms. Allocated memory was 86.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 46.6MB in the beginning and 942.1MB in the end (delta: -895.5MB). Peak memory consumption was 576.4MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,462 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 54.5MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.83ms. Allocated memory is still 86.0MB. Free memory was 46.4MB in the beginning and 58.4MB in the end (delta: -12.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.73ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 56.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: Boogie Preprocessor took 37.28ms. Allocated memory is still 86.0MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: RCFGBuilder took 333.40ms. Allocated memory is still 86.0MB. Free memory was 54.8MB in the beginning and 39.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,463 INFO L158 Benchmark]: TraceAbstraction took 69064.75ms. Allocated memory was 86.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 38.7MB in the beginning and 942.1MB in the end (delta: -903.5MB). Peak memory consumption was 568.7MB. Max. memory is 16.1GB. [2024-09-15 20:11:58,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 54.5MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.83ms. Allocated memory is still 86.0MB. Free memory was 46.4MB in the beginning and 58.4MB in the end (delta: -12.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.73ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 56.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.28ms. Allocated memory is still 86.0MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.40ms. Allocated memory is still 86.0MB. Free memory was 54.8MB in the beginning and 39.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 69064.75ms. Allocated memory was 86.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 38.7MB in the beginning and 942.1MB in the end (delta: -903.5MB). Peak memory consumption was 568.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 27]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 19]: 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: 17]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 69.0s, OverallIterations: 13, TraceHistogramMax: 56, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7086 IncrementalHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 116 mSDtfsCounter, 7086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2062 GetRequests, 1576 SyntacticMatches, 32 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7306 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=10, InterpolantAutomatonStates: 339, 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, 13 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 60.7s InterpolantComputationTime, 2244 NumberOfCodeBlocks, 1890 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 2995 ConstructedInterpolants, 0 QuantifiedInterpolants, 71863 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1716 ConjunctsInSsa, 302 ConjunctsInUnsatCore, 32 InterpolantComputations, 4 PerfectInterpolantSequences, 30608/67686 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:11:58,487 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...