This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 05:15:14,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:15:14,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:15:15,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:15:15,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:15:15,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:15:15,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:15:15,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:15:15,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:15:15,032 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:15:15,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:15:15,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:15:15,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:15:15,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:15:15,037 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:15:15,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:15:15,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:15:15,038 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:15:15,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:15:15,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:15:15,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:15:15,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:15:15,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:15:15,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:15:15,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:15:15,043 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:15:15,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:15:15,043 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:15:15,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:15:15,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:15:15,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:15:15,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:15:15,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:15:15,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:15:15,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:15:15,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:15:15,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:15:15,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:15:15,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:15:15,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:15:15,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:15:15,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:15:15,048 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:15:15,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:15:15,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:15:15,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:15:15,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:15:15,322 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:15:15,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/gj2007.i [2024-09-13 05:15:16,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:15:16,895 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:15:16,895 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.i [2024-09-13 05:15:16,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/526cd4ef9/1669ef1df1574e47b6b496bea6cbc3f6/FLAG907fd3238 [2024-09-13 05:15:17,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/526cd4ef9/1669ef1df1574e47b6b496bea6cbc3f6 [2024-09-13 05:15:17,301 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:15:17,302 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:15:17,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/gj2007.yml/witness-2.1.yml [2024-09-13 05:15:17,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:15:17,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:15:17,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:15:17,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:15:17,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:15:17,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:15:17" (1/2) ... [2024-09-13 05:15:17,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53466c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:15:17, skipping insertion in model container [2024-09-13 05:15:17,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:15:17" (1/2) ... [2024-09-13 05:15:17,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c88f95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:15:17, skipping insertion in model container [2024-09-13 05:15:17,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:15:17" (2/2) ... [2024-09-13 05:15:17,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53466c1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17, skipping insertion in model container [2024-09-13 05:15:17,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:15:17" (2/2) ... [2024-09-13 05:15:17,377 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:15:17,377 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))) [2024-09-13 05:15:17,377 INFO L1541 ArrayList]: Function contract at [L17]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:15:17,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:15:17,544 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2024-09-13 05:15:17,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:15:17,566 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 05:15:17,608 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.i[895,908] Start Parsing Local [2024-09-13 05:15:17,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:15:17,654 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:15:17,655 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17 WrapperNode [2024-09-13 05:15:17,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:15:17,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:15:17,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:15:17,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:15:17,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,702 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-09-13 05:15:17,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:15:17,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:15:17,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:15:17,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:15:17,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,733 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]. [2024-09-13 05:15:17,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:15:17,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:15:17,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:15:17,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:15:17,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (1/1) ... [2024-09-13 05:15:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:15:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:17,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:15:17,790 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:15:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:15:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 05:15:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:15:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:15:17,914 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:15:17,917 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:15:18,124 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-13 05:15:18,125 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:15:18,143 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:15:18,144 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 05:15:18,144 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:15:18 BoogieIcfgContainer [2024-09-13 05:15:18,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:15:18,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:15:18,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:15:18,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:15:18,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:15:17" (1/4) ... [2024-09-13 05:15:18,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb06cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:15:18, skipping insertion in model container [2024-09-13 05:15:18,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:15:17" (2/4) ... [2024-09-13 05:15:18,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb06cb9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:15:18, skipping insertion in model container [2024-09-13 05:15:18,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:15:17" (3/4) ... [2024-09-13 05:15:18,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb06cb9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:15:18, skipping insertion in model container [2024-09-13 05:15:18,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:15:18" (4/4) ... [2024-09-13 05:15:18,155 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.i [2024-09-13 05:15:18,178 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:15:18,179 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 05:15:18,230 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:15:18,240 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;@59489ac6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:15:18,240 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 05:15:18,244 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) [2024-09-13 05:15:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-13 05:15:18,251 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:18,252 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-13 05:15:18,253 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)] === [2024-09-13 05:15:18,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2267, now seen corresponding path program 1 times [2024-09-13 05:15:18,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697389487] [2024-09-13 05:15:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:18,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697389487] [2024-09-13 05:15:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697389487] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:15:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:15:18,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-13 05:15:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460858135] [2024-09-13 05:15:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:15:18,656 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:15:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:15:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:15:18,697 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) [2024-09-13 05:15:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:18,741 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-09-13 05:15:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:15:18,744 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 [2024-09-13 05:15:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:18,750 INFO L225 Difference]: With dead ends: 17 [2024-09-13 05:15:18,751 INFO L226 Difference]: Without dead ends: 16 [2024-09-13 05:15:18,752 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 [2024-09-13 05:15:18,756 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, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:15:18,757 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:15:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-13 05:15:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-13 05:15:18,785 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) [2024-09-13 05:15:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-13 05:15:18,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 2 [2024-09-13 05:15:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:18,788 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-13 05:15:18,789 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) [2024-09-13 05:15:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-13 05:15:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 05:15:18,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:18,790 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 05:15:18,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:15:18,791 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)] === [2024-09-13 05:15:18,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 67578981, now seen corresponding path program 1 times [2024-09-13 05:15:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:18,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714595275] [2024-09-13 05:15:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:18,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714595275] [2024-09-13 05:15:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714595275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415933364] [2024-09-13 05:15:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:18,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:18,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:15:18,995 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:15:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:19,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:15:19,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:19,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415933364] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:19,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-09-13 05:15:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182383247] [2024-09-13 05:15:19,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:19,181 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 05:15:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 05:15:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-13 05:15:19,183 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) [2024-09-13 05:15:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:19,263 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-13 05:15:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 05:15:19,264 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 [2024-09-13 05:15:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:19,265 INFO L225 Difference]: With dead ends: 25 [2024-09-13 05:15:19,266 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 05:15:19,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-13 05:15:19,267 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 [2024-09-13 05:15:19,268 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] [2024-09-13 05:15:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 05:15:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 05:15:19,270 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) [2024-09-13 05:15:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-09-13 05:15:19,271 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2024-09-13 05:15:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:19,272 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-09-13 05:15:19,272 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) [2024-09-13 05:15:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-09-13 05:15:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 05:15:19,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:19,273 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1] [2024-09-13 05:15:19,290 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 05:15:19,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:19,474 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)] === [2024-09-13 05:15:19,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1381240679, now seen corresponding path program 1 times [2024-09-13 05:15:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:19,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894685510] [2024-09-13 05:15:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:19,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894685510] [2024-09-13 05:15:19,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894685510] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194169233] [2024-09-13 05:15:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:19,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:19,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:15:19,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:15:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:19,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:15:19,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:19,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:19,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194169233] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:19,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:19,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-13 05:15:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792315894] [2024-09-13 05:15:19,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:19,888 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 05:15:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 05:15:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-13 05:15:19,890 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) [2024-09-13 05:15:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:19,978 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-09-13 05:15:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 05:15:19,978 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 [2024-09-13 05:15:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:19,979 INFO L225 Difference]: With dead ends: 40 [2024-09-13 05:15:19,979 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 05:15:19,980 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-13 05:15:19,981 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-13 05:15:19,981 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] [2024-09-13 05:15:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 05:15:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-13 05:15:19,986 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) [2024-09-13 05:15:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-09-13 05:15:19,987 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 14 [2024-09-13 05:15:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:19,988 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-09-13 05:15:19,988 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) [2024-09-13 05:15:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-09-13 05:15:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 05:15:19,990 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:19,990 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1] [2024-09-13 05:15:20,007 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 05:15:20,194 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:20,195 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)] === [2024-09-13 05:15:20,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1429193309, now seen corresponding path program 2 times [2024-09-13 05:15:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938758470] [2024-09-13 05:15:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938758470] [2024-09-13 05:15:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938758470] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612249094] [2024-09-13 05:15:20,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:15:20,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:20,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:20,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:15:20,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:15:20,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:15:20,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:15:20,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 05:15:20,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:20,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:21,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612249094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:21,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:21,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-09-13 05:15:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399141538] [2024-09-13 05:15:21,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:21,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 05:15:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 05:15:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-13 05:15:21,027 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) [2024-09-13 05:15:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:21,162 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-09-13 05:15:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 05:15:21,162 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 [2024-09-13 05:15:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:21,163 INFO L225 Difference]: With dead ends: 70 [2024-09-13 05:15:21,163 INFO L226 Difference]: Without dead ends: 70 [2024-09-13 05:15:21,164 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 [2024-09-13 05:15:21,165 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 [2024-09-13 05:15:21,165 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] [2024-09-13 05:15:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-13 05:15:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-13 05:15:21,170 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) [2024-09-13 05:15:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2024-09-13 05:15:21,171 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 29 [2024-09-13 05:15:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:21,171 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2024-09-13 05:15:21,171 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) [2024-09-13 05:15:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2024-09-13 05:15:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-13 05:15:21,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:21,172 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1] [2024-09-13 05:15:21,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 05:15:21,372 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 [2024-09-13 05:15:21,373 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)] === [2024-09-13 05:15:21,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:21,374 INFO L85 PathProgramCache]: Analyzing trace with hash 739400419, now seen corresponding path program 3 times [2024-09-13 05:15:21,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:21,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528261722] [2024-09-13 05:15:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:21,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 19 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528261722] [2024-09-13 05:15:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528261722] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748539255] [2024-09-13 05:15:22,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:15:22,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:22,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:22,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:15:22,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 05:15:22,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 05:15:22,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:15:22,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 05:15:22,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 54 proven. 19 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-13 05:15:22,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-13 05:15:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748539255] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:22,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 3, 3] total 24 [2024-09-13 05:15:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018440667] [2024-09-13 05:15:22,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:22,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 05:15:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 05:15:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2024-09-13 05:15:22,980 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) [2024-09-13 05:15:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:23,407 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-09-13 05:15:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-13 05:15:23,408 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 [2024-09-13 05:15:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:23,408 INFO L225 Difference]: With dead ends: 76 [2024-09-13 05:15:23,408 INFO L226 Difference]: Without dead ends: 76 [2024-09-13 05:15:23,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 05:15:23,412 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 [2024-09-13 05:15:23,412 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] [2024-09-13 05:15:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-13 05:15:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-09-13 05:15:23,422 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) [2024-09-13 05:15:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2024-09-13 05:15:23,424 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 59 [2024-09-13 05:15:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:23,425 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2024-09-13 05:15:23,425 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) [2024-09-13 05:15:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2024-09-13 05:15:23,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-13 05:15:23,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:23,427 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 19, 2, 1, 1] [2024-09-13 05:15:23,444 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 05:15:23,628 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 [2024-09-13 05:15:23,628 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)] === [2024-09-13 05:15:23,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1411357147, now seen corresponding path program 4 times [2024-09-13 05:15:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041376653] [2024-09-13 05:15:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:23,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041376653] [2024-09-13 05:15:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041376653] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210281232] [2024-09-13 05:15:24,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 05:15:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:24,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:15:24,615 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 05:15:24,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 05:15:24,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:15:24,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 05:15:24,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:24,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 80 proven. 570 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210281232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:25,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2024-09-13 05:15:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823352087] [2024-09-13 05:15:25,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:25,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-13 05:15:25,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-13 05:15:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 05:15:25,526 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) [2024-09-13 05:15:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:25,764 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2024-09-13 05:15:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-13 05:15:25,765 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 [2024-09-13 05:15:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:25,768 INFO L225 Difference]: With dead ends: 139 [2024-09-13 05:15:25,768 INFO L226 Difference]: Without dead ends: 139 [2024-09-13 05:15:25,769 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 05:15:25,769 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-13 05:15:25,770 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] [2024-09-13 05:15:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-13 05:15:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-09-13 05:15:25,780 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) [2024-09-13 05:15:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2024-09-13 05:15:25,782 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 65 [2024-09-13 05:15:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:25,782 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2024-09-13 05:15:25,782 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) [2024-09-13 05:15:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2024-09-13 05:15:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-13 05:15:25,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:25,785 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 40, 2, 1, 1] [2024-09-13 05:15:25,804 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 05:15:25,986 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 [2024-09-13 05:15:25,986 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)] === [2024-09-13 05:15:25,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash -166158629, now seen corresponding path program 5 times [2024-09-13 05:15:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334438942] [2024-09-13 05:15:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334438942] [2024-09-13 05:15:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334438942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113129881] [2024-09-13 05:15:29,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 05:15:29,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:29,006 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) [2024-09-13 05:15:29,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 05:15:29,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-13 05:15:29,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:15:29,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-13 05:15:29,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:29,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 164 proven. 2460 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:15:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113129881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:30,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 52 [2024-09-13 05:15:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403425046] [2024-09-13 05:15:30,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:30,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-13 05:15:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-13 05:15:30,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 05:15:30,527 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) [2024-09-13 05:15:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:30,817 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-09-13 05:15:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-13 05:15:30,818 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 [2024-09-13 05:15:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:30,818 INFO L225 Difference]: With dead ends: 169 [2024-09-13 05:15:30,819 INFO L226 Difference]: Without dead ends: 169 [2024-09-13 05:15:30,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 213 SyntacticMatches, 32 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 05:15:30,820 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 [2024-09-13 05:15:30,820 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] [2024-09-13 05:15:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-13 05:15:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-09-13 05:15:30,834 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) [2024-09-13 05:15:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2024-09-13 05:15:30,835 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 128 [2024-09-13 05:15:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:30,835 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2024-09-13 05:15:30,835 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) [2024-09-13 05:15:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2024-09-13 05:15:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-13 05:15:30,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:30,841 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 50, 2, 1, 1] [2024-09-13 05:15:30,863 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 05:15:31,042 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 [2024-09-13 05:15:31,042 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)] === [2024-09-13 05:15:31,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2104395365, now seen corresponding path program 6 times [2024-09-13 05:15:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128504865] [2024-09-13 05:15:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:31,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128504865] [2024-09-13 05:15:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128504865] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815630320] [2024-09-13 05:15:35,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 05:15:35,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:35,567 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) [2024-09-13 05:15:35,568 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 05:15:35,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-13 05:15:35,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:15:35,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 05:15:35,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 3825 trivial. 0 not checked. [2024-09-13 05:15:35,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:15:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 3825 trivial. 0 not checked. [2024-09-13 05:15:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815630320] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:15:52,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:15:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 4, 5] total 58 [2024-09-13 05:15:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206074598] [2024-09-13 05:15:52,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:15:52,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-13 05:15:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:15:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-13 05:15:52,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2040, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 05:15:52,847 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) [2024-09-13 05:15:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:15:53,157 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2024-09-13 05:15:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-13 05:15:53,158 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 [2024-09-13 05:15:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:15:53,159 INFO L225 Difference]: With dead ends: 172 [2024-09-13 05:15:53,159 INFO L226 Difference]: Without dead ends: 172 [2024-09-13 05:15:53,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1500, Invalid=2040, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 05:15:53,160 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:15:53,160 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:15:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-13 05:15:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-09-13 05:15:53,167 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) [2024-09-13 05:15:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2024-09-13 05:15:53,168 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 158 [2024-09-13 05:15:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:15:53,169 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2024-09-13 05:15:53,169 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) [2024-09-13 05:15:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2024-09-13 05:15:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-09-13 05:15:53,171 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:15:53,171 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 50, 3, 1, 1] [2024-09-13 05:15:53,186 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 05:15:53,371 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 [2024-09-13 05:15:53,372 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)] === [2024-09-13 05:15:53,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:15:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1595343843, now seen corresponding path program 7 times [2024-09-13 05:15:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:15:53,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408856435] [2024-09-13 05:15:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:15:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:15:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:15:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:15:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408856435] [2024-09-13 05:15:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408856435] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:15:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972623671] [2024-09-13 05:15:58,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 05:15:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:15:58,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:15:58,132 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) [2024-09-13 05:15:58,133 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 05:15:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:15:58,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-13 05:15:58,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:15:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 100 proven. 362 refuted. 0 times theorem prover too weak. 3725 trivial. 0 not checked. [2024-09-13 05:15:58,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:16:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 3725 trivial. 0 not checked. [2024-09-13 05:16:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972623671] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:16:14,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:16:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 5, 6] total 58 [2024-09-13 05:16:14,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160889285] [2024-09-13 05:16:14,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:16:14,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-13 05:16:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:14,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-13 05:16:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1942, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 05:16:14,376 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) [2024-09-13 05:16:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:16:14,642 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2024-09-13 05:16:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-13 05:16:14,642 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 [2024-09-13 05:16:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:16:14,643 INFO L225 Difference]: With dead ends: 175 [2024-09-13 05:16:14,643 INFO L226 Difference]: Without dead ends: 175 [2024-09-13 05:16:14,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1598, Invalid=1942, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 05:16:14,645 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 [2024-09-13 05:16:14,645 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] [2024-09-13 05:16:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-13 05:16:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-09-13 05:16:14,654 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) [2024-09-13 05:16:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2024-09-13 05:16:14,655 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 161 [2024-09-13 05:16:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:16:14,656 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2024-09-13 05:16:14,656 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) [2024-09-13 05:16:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2024-09-13 05:16:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-13 05:16:14,659 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:16:14,659 INFO L216 NwaCegarLoop]: trace histogram [54, 54, 50, 4, 1, 1] [2024-09-13 05:16:14,679 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 05:16:14,859 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 [2024-09-13 05:16:14,860 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)] === [2024-09-13 05:16:14,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:16:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1219627877, now seen corresponding path program 8 times [2024-09-13 05:16:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:16:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137332651] [2024-09-13 05:16:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:16:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:16:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:16:19,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:16:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137332651] [2024-09-13 05:16:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137332651] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:16:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419968839] [2024-09-13 05:16:19,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:16:19,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:16:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:16:19,278 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) [2024-09-13 05:16:19,279 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 05:16:19,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:16:19,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:16:19,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-13 05:16:19,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:16:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:16:20,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:16:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:16:21,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419968839] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:16:21,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:16:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 105 [2024-09-13 05:16:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215335262] [2024-09-13 05:16:21,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:16:21,265 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-13 05:16:21,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-13 05:16:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2761, Invalid=8581, Unknown=0, NotChecked=0, Total=11342 [2024-09-13 05:16:21,269 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) [2024-09-13 05:16:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:16:23,350 INFO L93 Difference]: Finished difference Result 178 states and 179 transitions. [2024-09-13 05:16:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-13 05:16:23,352 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 [2024-09-13 05:16:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:16:23,353 INFO L225 Difference]: With dead ends: 178 [2024-09-13 05:16:23,353 INFO L226 Difference]: Without dead ends: 178 [2024-09-13 05:16:23,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2761, Invalid=8581, Unknown=0, NotChecked=0, Total=11342 [2024-09-13 05:16:23,358 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 5948 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-09-13 05:16:23,358 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5948 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-13 05:16:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-13 05:16:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-09-13 05:16:23,368 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) [2024-09-13 05:16:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2024-09-13 05:16:23,368 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 164 [2024-09-13 05:16:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:16:23,369 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2024-09-13 05:16:23,369 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) [2024-09-13 05:16:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2024-09-13 05:16:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-09-13 05:16:23,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:16:23,371 INFO L216 NwaCegarLoop]: trace histogram [55, 55, 50, 5, 1, 1] [2024-09-13 05:16:23,402 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 05:16:23,579 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 [2024-09-13 05:16:23,580 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)] === [2024-09-13 05:16:23,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:16:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1489283299, now seen corresponding path program 9 times [2024-09-13 05:16:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:16:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8207392] [2024-09-13 05:16:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:23,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:16:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:16:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:16:28,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:16:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8207392] [2024-09-13 05:16:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8207392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:16:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400604529] [2024-09-13 05:16:28,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:16:28,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:16:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:16:28,135 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) [2024-09-13 05:16:28,136 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 05:16:28,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 05:16:28,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:16:28,204 WARN L260 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-13 05:16:28,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:16:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 4293 trivial. 0 not checked. [2024-09-13 05:16:30,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:16:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400604529] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:16:30,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:16:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [56] total 61 [2024-09-13 05:16:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399114973] [2024-09-13 05:16:30,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:16:30,708 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:16:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:16:30,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1420, Invalid=2362, Unknown=0, NotChecked=0, Total=3782 [2024-09-13 05:16:30,710 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) [2024-09-13 05:16:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:16:31,760 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2024-09-13 05:16:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:16:31,761 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 [2024-09-13 05:16:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:16:31,762 INFO L225 Difference]: With dead ends: 177 [2024-09-13 05:16:31,762 INFO L226 Difference]: Without dead ends: 177 [2024-09-13 05:16:31,762 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1430, Invalid=2476, Unknown=0, NotChecked=0, Total=3906 [2024-09-13 05:16:31,763 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:16:31,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:16:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-13 05:16:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2024-09-13 05:16:31,766 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) [2024-09-13 05:16:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2024-09-13 05:16:31,767 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 167 [2024-09-13 05:16:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:16:31,767 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2024-09-13 05:16:31,768 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) [2024-09-13 05:16:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2024-09-13 05:16:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-13 05:16:31,769 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:16:31,769 INFO L216 NwaCegarLoop]: trace histogram [56, 55, 50, 5, 1, 1, 1, 1] [2024-09-13 05:16:31,784 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 05:16:31,973 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 [2024-09-13 05:16:31,974 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)] === [2024-09-13 05:16:31,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:16:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash 226633928, now seen corresponding path program 1 times [2024-09-13 05:16:31,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:16:31,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476160566] [2024-09-13 05:16:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:31,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:16:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:16:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4510 trivial. 0 not checked. [2024-09-13 05:16:37,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:16:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476160566] [2024-09-13 05:16:37,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476160566] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:16:37,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:16:37,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 05:16:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712492647] [2024-09-13 05:16:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:16:37,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 05:16:37,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 05:16:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 05:16:37,027 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) [2024-09-13 05:16:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:16:37,044 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2024-09-13 05:16:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 05:16:37,045 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 [2024-09-13 05:16:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:16:37,046 INFO L225 Difference]: With dead ends: 174 [2024-09-13 05:16:37,046 INFO L226 Difference]: Without dead ends: 173 [2024-09-13 05:16:37,046 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 [2024-09-13 05:16:37,047 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 [2024-09-13 05:16:37,047 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] [2024-09-13 05:16:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-13 05:16:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-13 05:16:37,050 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) [2024-09-13 05:16:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2024-09-13 05:16:37,050 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2024-09-13 05:16:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:16:37,051 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2024-09-13 05:16:37,051 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) [2024-09-13 05:16:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2024-09-13 05:16:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-13 05:16:37,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:16:37,052 INFO L216 NwaCegarLoop]: trace histogram [56, 55, 50, 5, 1, 1, 1, 1, 1, 1] [2024-09-13 05:16:37,052 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-13 05:16:37,052 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)] === [2024-09-13 05:16:37,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:16:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1248125429, now seen corresponding path program 1 times [2024-09-13 05:16:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:16:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962610878] [2024-09-13 05:16:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:16:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:16:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4565 trivial. 0 not checked. [2024-09-13 05:16:37,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:16:37,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962610878] [2024-09-13 05:16:37,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962610878] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:16:37,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:16:37,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:16:37,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150786298] [2024-09-13 05:16:37,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:16:37,575 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:16:37,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:16:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:16:37,576 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) [2024-09-13 05:16:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:16:37,578 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2024-09-13 05:16:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:16:37,579 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 [2024-09-13 05:16:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:16:37,579 INFO L225 Difference]: With dead ends: 171 [2024-09-13 05:16:37,579 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:16:37,579 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 [2024-09-13 05:16:37,580 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 [2024-09-13 05:16:37,580 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] [2024-09-13 05:16:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:16:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:16:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:16:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:16:37,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2024-09-13 05:16:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:16:37,581 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:16:37,581 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) [2024-09-13 05:16:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:16:37,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:16:37,584 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-13 05:16:37,584 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-13 05:16:37,584 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-13 05:16:37,585 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-13 05:16:37,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-13 05:16:37,587 INFO L408 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2024-09-13 05:16:37,589 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:16:37,591 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 05:16:37,592 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 05:16:37,593 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:16:37 BoogieIcfgContainer [2024-09-13 05:16:37,593 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:16:37,593 INFO L158 Benchmark]: Toolchain (without parser) took 80242.45ms. Allocated memory was 151.0MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 78.8MB in the beginning and 863.0MB in the end (delta: -784.2MB). Peak memory consumption was 780.5MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,593 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:16:37,593 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:16:37,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.98ms. Allocated memory is still 151.0MB. Free memory was 78.5MB in the beginning and 64.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.13ms. Allocated memory is still 151.0MB. Free memory was 64.7MB in the beginning and 62.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,594 INFO L158 Benchmark]: Boogie Preprocessor took 48.43ms. Allocated memory is still 151.0MB. Free memory was 62.9MB in the beginning and 61.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,594 INFO L158 Benchmark]: RCFGBuilder took 392.70ms. Allocated memory is still 151.0MB. Free memory was 61.0MB in the beginning and 109.0MB in the end (delta: -48.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,594 INFO L158 Benchmark]: TraceAbstraction took 79446.31ms. Allocated memory was 151.0MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 108.3MB in the beginning and 863.0MB in the end (delta: -754.6MB). Peak memory consumption was 809.8MB. Max. memory is 16.1GB. [2024-09-13 05:16:37,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.98ms. Allocated memory is still 151.0MB. Free memory was 78.5MB in the beginning and 64.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.13ms. Allocated memory is still 151.0MB. Free memory was 64.7MB in the beginning and 62.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.43ms. Allocated memory is still 151.0MB. Free memory was 62.9MB in the beginning and 61.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.70ms. Allocated memory is still 151.0MB. Free memory was 61.0MB in the beginning and 109.0MB in the end (delta: -48.0MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 79446.31ms. Allocated memory was 151.0MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 108.3MB in the beginning and 863.0MB in the end (delta: -754.6MB). Peak memory consumption was 809.8MB. 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: 79.4s, OverallIterations: 13, TraceHistogramMax: 56, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 2.9s 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, 12.3s 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, 1.3s SatisfiabilityAnalysisTime, 69.7s 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! [2024-09-13 05:16:37,627 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...