This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:30:29,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:30:29,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:30:29,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:30:29,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:30:29,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:30:29,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:30:29,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:30:29,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:30:29,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:30:29,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:30:29,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:30:29,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:30:29,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:30:29,327 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:30:29,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:30:29,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:30:29,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:30:29,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:30:29,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:30:29,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:30:29,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:30:29,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:30:29,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:30:29,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:30:29,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:30:29,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:30:29,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:30:29,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:30:29,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:30:29,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:30:29,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:30:29,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:30:29,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:30:29,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:30:29,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:30:29,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:30:29,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:30:29,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:30:29,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:30:29,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:30:29,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:30:29,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:30:29,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:30:29,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:30:29,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:30:29,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:30:29,649 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:30:29,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2024-09-20 13:30:31,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:30:31,253 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:30:31,253 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2024-09-20 13:30:31,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c05bc1e40/e99211fefeef4eb699f2d08ce3337a27/FLAGf53dc356e [2024-09-20 13:30:31,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c05bc1e40/e99211fefeef4eb699f2d08ce3337a27 [2024-09-20 13:30:31,653 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:30:31,654 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:30:31,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/SpamAssassin-loop.i.v+cfa-reducer.yml/witness-2.1.yml [2024-09-20 13:30:31,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:30:31,710 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:30:31,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:30:31,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:30:31,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:30:31,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:31" (1/2) ... [2024-09-20 13:30:31,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78543710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:31, skipping insertion in model container [2024-09-20 13:30:31,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:31" (1/2) ... [2024-09-20 13:30:31,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f480721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:31, skipping insertion in model container [2024-09-20 13:30:31,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:31" (2/2) ... [2024-09-20 13:30:31,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78543710 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:31, skipping insertion in model container [2024-09-20 13:30:31,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:31" (2/2) ... [2024-09-20 13:30:31,733 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:30:31,734 INFO L1541 ArrayList]: Location invariant before [L34-L305] (((((1 <= main__i) && (1 <= main__j)) && (\old(__return_334) == __return_334)) && (((long long) main__limit + 4) <= main__bufsize)) || ((((main__j == 0) && (\old(__return_334) == __return_334)) && (((long long) main__limit + 4) <= main__bufsize)) && (((main__i == 0) && (1 <= main__len)) || ((1 <= main__i) && (((long long) main__i + 1) <= main__len))))) [2024-09-20 13:30:31,734 INFO L1541 ArrayList]: Location invariant before [L38-L294] ((((((main__j == 0) && (\old(__return_334) == __return_334)) && (((long long) main__limit + 4) <= main__bufsize)) && (((main__i == 0) && (1 <= main__len)) || ((1 <= main__i) && (((long long) main__i + 1) <= main__len)))) && (5 <= main__bufsize)) || (((((1 <= main__j) && (((long long) 5 + main__j) <= main__bufsize)) && (\old(__return_334) == __return_334)) && (((long long) main__limit + 4) <= main__bufsize)) && (((main__i == 0) && (1 <= main__len)) || ((1 <= main__i) && (((long long) main__i + 1) <= main__len))))) [2024-09-20 13:30:31,735 INFO L1541 ArrayList]: Location invariant before [L30-L311] (((\old(__return_334) == __return_334) && (((long long) main__limit + 4) <= main__bufsize)) && ((main__i == 0) || (0 < main__i))) [2024-09-20 13:30:31,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:30:31,916 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2024-09-20 13:30:31,921 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2024-09-20 13:30:31,924 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2024-09-20 13:30:31,925 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2024-09-20 13:30:31,927 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2024-09-20 13:30:31,928 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2024-09-20 13:30:31,932 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2024-09-20 13:30:31,934 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2024-09-20 13:30:31,936 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2024-09-20 13:30:31,937 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2024-09-20 13:30:31,939 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2024-09-20 13:30:31,941 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2024-09-20 13:30:31,943 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2024-09-20 13:30:31,944 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2024-09-20 13:30:31,946 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2024-09-20 13:30:31,948 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2024-09-20 13:30:31,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:30:31,966 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:30:31,987 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2024-09-20 13:30:31,989 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2024-09-20 13:30:31,993 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2024-09-20 13:30:32,001 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2024-09-20 13:30:32,002 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2024-09-20 13:30:32,004 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2024-09-20 13:30:32,006 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2024-09-20 13:30:32,007 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2024-09-20 13:30:32,008 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2024-09-20 13:30:32,010 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2024-09-20 13:30:32,012 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2024-09-20 13:30:32,013 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2024-09-20 13:30:32,014 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2024-09-20 13:30:32,015 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2024-09-20 13:30:32,017 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2024-09-20 13:30:32,022 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-20 13:30:32,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:30:32,096 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:30:32,096 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32 WrapperNode [2024-09-20 13:30:32,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:30:32,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:30:32,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:30:32,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:30:32,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,150 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 222 [2024-09-20 13:30:32,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:30:32,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:30:32,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:30:32,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:30:32,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,198 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]. [2024-09-20 13:30:32,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:30:32,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:30:32,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:30:32,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:30:32,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (1/1) ... [2024-09-20 13:30:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:30:32,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:32,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 13:30:32,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 13:30:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:30:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:30:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:30:32,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:30:32,486 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:30:32,488 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:30:32,771 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-09-20 13:30:32,771 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:30:32,813 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:30:32,815 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:30:32,817 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:32 BoogieIcfgContainer [2024-09-20 13:30:32,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:30:32,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:30:32,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:30:32,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:30:32,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:31" (1/4) ... [2024-09-20 13:30:32,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758a617e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:32, skipping insertion in model container [2024-09-20 13:30:32,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:31" (2/4) ... [2024-09-20 13:30:32,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758a617e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:30:32, skipping insertion in model container [2024-09-20 13:30:32,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:32" (3/4) ... [2024-09-20 13:30:32,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758a617e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:30:32, skipping insertion in model container [2024-09-20 13:30:32,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:32" (4/4) ... [2024-09-20 13:30:32,829 INFO L112 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2024-09-20 13:30:32,848 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:30:32,848 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-09-20 13:30:32,898 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:30:32,904 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;@77cc1e84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:30:32,905 INFO L337 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-09-20 13:30:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 63 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-20 13:30:32,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:32,918 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-20 13:30:32,918 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:32,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 187779, now seen corresponding path program 1 times [2024-09-20 13:30:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890226204] [2024-09-20 13:30:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890226204] [2024-09-20 13:30:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890226204] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:33,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:33,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:30:33,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523959262] [2024-09-20 13:30:33,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:33,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:33,182 INFO L87 Difference]: Start difference. First operand has 64 states, 44 states have (on average 1.9318181818181819) internal successors, (85), 63 states have internal predecessors, (85), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:33,298 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-09-20 13:30:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-09-20 13:30:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:33,314 INFO L225 Difference]: With dead ends: 105 [2024-09-20 13:30:33,314 INFO L226 Difference]: Without dead ends: 101 [2024-09-20 13:30:33,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:33,318 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 147 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:33,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 83 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-20 13:30:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67. [2024-09-20 13:30:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2024-09-20 13:30:33,347 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 3 [2024-09-20 13:30:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:33,347 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2024-09-20 13:30:33,348 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2024-09-20 13:30:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-20 13:30:33,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:33,348 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-20 13:30:33,349 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:30:33,349 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:33,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 180457179, now seen corresponding path program 1 times [2024-09-20 13:30:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831497857] [2024-09-20 13:30:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:33,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:33,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831497857] [2024-09-20 13:30:33,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831497857] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:33,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:33,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:30:33,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60867963] [2024-09-20 13:30:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:33,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:33,509 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:33,643 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2024-09-20 13:30:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:33,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 [2024-09-20 13:30:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:33,645 INFO L225 Difference]: With dead ends: 101 [2024-09-20 13:30:33,645 INFO L226 Difference]: Without dead ends: 101 [2024-09-20 13:30:33,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:33,646 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 102 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:33,647 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 115 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-20 13:30:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67. [2024-09-20 13:30:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.5) internal successors, (72), 66 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) [2024-09-20 13:30:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2024-09-20 13:30:33,661 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 5 [2024-09-20 13:30:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:33,661 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2024-09-20 13:30:33,661 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2024-09-20 13:30:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-20 13:30:33,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:33,663 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:33,663 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:30:33,664 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1299184118, now seen corresponding path program 1 times [2024-09-20 13:30:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143855415] [2024-09-20 13:30:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143855415] [2024-09-20 13:30:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143855415] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362479052] [2024-09-20 13:30:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,067 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:30:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:30:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:34,069 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,184 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2024-09-20 13:30:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:34,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2024-09-20 13:30:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,186 INFO L225 Difference]: With dead ends: 101 [2024-09-20 13:30:34,187 INFO L226 Difference]: Without dead ends: 101 [2024-09-20 13:30:34,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:34,189 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 201 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,190 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 115 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-20 13:30:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 68. [2024-09-20 13:30:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 49 states have (on average 1.489795918367347) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-09-20 13:30:34,196 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 8 [2024-09-20 13:30:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,196 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-09-20 13:30:34,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-09-20 13:30:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-20 13:30:34,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,198 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,198 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 13:30:34,198 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2043695404, now seen corresponding path program 1 times [2024-09-20 13:30:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281924979] [2024-09-20 13:30:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281924979] [2024-09-20 13:30:34,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281924979] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:30:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545397806] [2024-09-20 13:30:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,298 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:30:34,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:30:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:30:34,299 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,317 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2024-09-20 13:30:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:30:34,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-09-20 13:30:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,319 INFO L225 Difference]: With dead ends: 66 [2024-09-20 13:30:34,319 INFO L226 Difference]: Without dead ends: 66 [2024-09-20 13:30:34,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:30:34,320 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-20 13:30:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-20 13:30:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 65 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-09-20 13:30:34,332 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 11 [2024-09-20 13:30:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,332 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-09-20 13:30:34,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-09-20 13:30:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 13:30:34,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,333 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,333 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 13:30:34,334 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1073602405, now seen corresponding path program 1 times [2024-09-20 13:30:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671539819] [2024-09-20 13:30:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671539819] [2024-09-20 13:30:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671539819] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223102862] [2024-09-20 13:30:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:34,401 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,456 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-09-20 13:30:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-09-20 13:30:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,459 INFO L225 Difference]: With dead ends: 70 [2024-09-20 13:30:34,459 INFO L226 Difference]: Without dead ends: 70 [2024-09-20 13:30:34,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:34,460 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,460 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 106 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-20 13:30:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-09-20 13:30:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.469387755102041) internal successors, (72), 65 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) [2024-09-20 13:30:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-09-20 13:30:34,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 12 [2024-09-20 13:30:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,466 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-09-20 13:30:34,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-09-20 13:30:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 13:30:34,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,467 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-20 13:30:34,468 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1069955987, now seen corresponding path program 1 times [2024-09-20 13:30:34,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916158612] [2024-09-20 13:30:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916158612] [2024-09-20 13:30:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916158612] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168564085] [2024-09-20 13:30:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,526 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:34,527 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,573 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2024-09-20 13:30:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-09-20 13:30:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,574 INFO L225 Difference]: With dead ends: 64 [2024-09-20 13:30:34,574 INFO L226 Difference]: Without dead ends: 64 [2024-09-20 13:30:34,574 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:34,575 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,575 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 76 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-20 13:30:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-20 13:30:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2024-09-20 13:30:34,582 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 12 [2024-09-20 13:30:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,582 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2024-09-20 13:30:34,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-09-20 13:30:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 13:30:34,586 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,586 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,586 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-20 13:30:34,586 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1078059723, now seen corresponding path program 1 times [2024-09-20 13:30:34,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755896357] [2024-09-20 13:30:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755896357] [2024-09-20 13:30:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755896357] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244143597] [2024-09-20 13:30:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:34,655 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,700 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2024-09-20 13:30:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-09-20 13:30:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,701 INFO L225 Difference]: With dead ends: 62 [2024-09-20 13:30:34,701 INFO L226 Difference]: Without dead ends: 62 [2024-09-20 13:30:34,702 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:34,702 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,702 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 72 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-20 13:30:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-09-20 13:30:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.446808510638298) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-09-20 13:30:34,706 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 13 [2024-09-20 13:30:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,706 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-09-20 13:30:34,707 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-09-20 13:30:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 13:30:34,709 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,709 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,709 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-20 13:30:34,710 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 939891052, now seen corresponding path program 1 times [2024-09-20 13:30:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144490625] [2024-09-20 13:30:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144490625] [2024-09-20 13:30:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144490625] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513027162] [2024-09-20 13:30:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:34,801 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2024-09-20 13:30:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,868 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2024-09-20 13:30:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:34,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2024-09-20 13:30:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,870 INFO L225 Difference]: With dead ends: 87 [2024-09-20 13:30:34,870 INFO L226 Difference]: Without dead ends: 87 [2024-09-20 13:30:34,870 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:34,871 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,871 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 123 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-20 13:30:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2024-09-20 13:30:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-09-20 13:30:34,876 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 14 [2024-09-20 13:30:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,876 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-09-20 13:30:34,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2024-09-20 13:30:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-09-20 13:30:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 13:30:34,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,877 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,877 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-20 13:30:34,878 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1730679063, now seen corresponding path program 1 times [2024-09-20 13:30:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925714252] [2024-09-20 13:30:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:34,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925714252] [2024-09-20 13:30:34,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925714252] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:34,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:34,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:34,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301227108] [2024-09-20 13:30:34,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:34,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:34,928 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2024-09-20 13:30:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:34,977 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2024-09-20 13:30:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 14 [2024-09-20 13:30:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:34,978 INFO L225 Difference]: With dead ends: 74 [2024-09-20 13:30:34,978 INFO L226 Difference]: Without dead ends: 74 [2024-09-20 13:30:34,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:34,979 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:34,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-20 13:30:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2024-09-20 13:30:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 69 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2024-09-20 13:30:34,983 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 14 [2024-09-20 13:30:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:34,983 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2024-09-20 13:30:34,984 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2024-09-20 13:30:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2024-09-20 13:30:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:30:34,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:34,984 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:34,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-20 13:30:34,984 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:34,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:34,985 INFO L85 PathProgramCache]: Analyzing trace with hash -928144356, now seen corresponding path program 1 times [2024-09-20 13:30:34,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729248979] [2024-09-20 13:30:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:35,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729248979] [2024-09-20 13:30:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729248979] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:35,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800335182] [2024-09-20 13:30:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:35,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:35,043 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:35,090 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2024-09-20 13:30:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-09-20 13:30:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:35,091 INFO L225 Difference]: With dead ends: 71 [2024-09-20 13:30:35,091 INFO L226 Difference]: Without dead ends: 71 [2024-09-20 13:30:35,092 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:35,092 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:35,092 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 71 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-20 13:30:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2024-09-20 13:30:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 67 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) [2024-09-20 13:30:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2024-09-20 13:30:35,099 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 15 [2024-09-20 13:30:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:35,099 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2024-09-20 13:30:35,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2024-09-20 13:30:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:30:35,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:35,102 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:35,102 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-20 13:30:35,103 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:35,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash -928144141, now seen corresponding path program 1 times [2024-09-20 13:30:35,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:35,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892054220] [2024-09-20 13:30:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:35,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892054220] [2024-09-20 13:30:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892054220] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417984490] [2024-09-20 13:30:35,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:35,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:35,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:30:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:35,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 13:30:35,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:35,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:35,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417984490] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:35,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:30:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 5] total 8 [2024-09-20 13:30:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493511766] [2024-09-20 13:30:35,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:35,708 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:30:35,709 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:35,799 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2024-09-20 13:30:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-09-20 13:30:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:35,800 INFO L225 Difference]: With dead ends: 82 [2024-09-20 13:30:35,800 INFO L226 Difference]: Without dead ends: 82 [2024-09-20 13:30:35,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:30:35,801 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 57 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:35,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 40 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-20 13:30:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2024-09-20 13:30:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 68 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) [2024-09-20 13:30:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2024-09-20 13:30:35,805 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 15 [2024-09-20 13:30:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:35,806 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2024-09-20 13:30:35,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2024-09-20 13:30:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:30:35,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:35,807 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:35,825 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:36,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:30:36,012 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2111447522, now seen corresponding path program 1 times [2024-09-20 13:30:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133037728] [2024-09-20 13:30:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133037728] [2024-09-20 13:30:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133037728] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:36,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164369987] [2024-09-20 13:30:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:36,078 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,146 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2024-09-20 13:30:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2024-09-20 13:30:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,147 INFO L225 Difference]: With dead ends: 67 [2024-09-20 13:30:36,147 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 13:30:36,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:36,148 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 86 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 13:30:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-20 13:30:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 66 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-09-20 13:30:36,151 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 15 [2024-09-20 13:30:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,151 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-09-20 13:30:36,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-09-20 13:30:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 13:30:36,152 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,152 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-20 13:30:36,152 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1030367870, now seen corresponding path program 1 times [2024-09-20 13:30:36,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665597578] [2024-09-20 13:30:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665597578] [2024-09-20 13:30:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665597578] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421317617] [2024-09-20 13:30:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:36,225 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,291 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2024-09-20 13:30:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:36,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-09-20 13:30:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,292 INFO L225 Difference]: With dead ends: 74 [2024-09-20 13:30:36,292 INFO L226 Difference]: Without dead ends: 74 [2024-09-20 13:30:36,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:36,293 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,293 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 134 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-20 13:30:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2024-09-20 13:30:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2024-09-20 13:30:36,297 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 16 [2024-09-20 13:30:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,297 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2024-09-20 13:30:36,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2024-09-20 13:30:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-20 13:30:36,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,299 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-20 13:30:36,300 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1876637033, now seen corresponding path program 1 times [2024-09-20 13:30:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724330932] [2024-09-20 13:30:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724330932] [2024-09-20 13:30:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724330932] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174564959] [2024-09-20 13:30:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:36,379 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-09-20 13:30:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,424 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2024-09-20 13:30:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) Word has length 17 [2024-09-20 13:30:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,425 INFO L225 Difference]: With dead ends: 69 [2024-09-20 13:30:36,425 INFO L226 Difference]: Without dead ends: 69 [2024-09-20 13:30:36,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:36,426 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-20 13:30:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-20 13:30:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2024-09-20 13:30:36,429 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 17 [2024-09-20 13:30:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,429 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2024-09-20 13:30:36,429 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2024-09-20 13:30:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2024-09-20 13:30:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-20 13:30:36,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,431 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-20 13:30:36,432 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 657398002, now seen corresponding path program 1 times [2024-09-20 13:30:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932395069] [2024-09-20 13:30:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932395069] [2024-09-20 13:30:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932395069] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546199805] [2024-09-20 13:30:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,490 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:36,491 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,527 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2024-09-20 13:30:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:36,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2024-09-20 13:30:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,528 INFO L225 Difference]: With dead ends: 82 [2024-09-20 13:30:36,528 INFO L226 Difference]: Without dead ends: 73 [2024-09-20 13:30:36,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:36,530 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-20 13:30:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-20 13:30:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.3) internal successors, (78), 70 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) [2024-09-20 13:30:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2024-09-20 13:30:36,533 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 18 [2024-09-20 13:30:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,533 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2024-09-20 13:30:36,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2024-09-20 13:30:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-20 13:30:36,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,534 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-20 13:30:36,534 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1953789979, now seen corresponding path program 1 times [2024-09-20 13:30:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748213615] [2024-09-20 13:30:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748213615] [2024-09-20 13:30:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748213615] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:30:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388528162] [2024-09-20 13:30:36,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:30:36,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:30:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:36,588 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,627 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-20 13:30:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:30:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2024-09-20 13:30:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,628 INFO L225 Difference]: With dead ends: 71 [2024-09-20 13:30:36,628 INFO L226 Difference]: Without dead ends: 71 [2024-09-20 13:30:36,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:30:36,628 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,629 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-20 13:30:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-09-20 13:30:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 68 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-09-20 13:30:36,631 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 18 [2024-09-20 13:30:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,631 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-09-20 13:30:36,631 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-09-20 13:30:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-20 13:30:36,632 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,632 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-20 13:30:36,632 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash -437943056, now seen corresponding path program 1 times [2024-09-20 13:30:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251768932] [2024-09-20 13:30:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251768932] [2024-09-20 13:30:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251768932] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529698953] [2024-09-20 13:30:36,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:36,698 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,775 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-09-20 13:30:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2024-09-20 13:30:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,776 INFO L225 Difference]: With dead ends: 80 [2024-09-20 13:30:36,776 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 13:30:36,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:36,777 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,777 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 95 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 13:30:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-09-20 13:30:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 66 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2024-09-20 13:30:36,780 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 19 [2024-09-20 13:30:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,780 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2024-09-20 13:30:36,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2024-09-20 13:30:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-20 13:30:36,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,781 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,781 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-20 13:30:36,781 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash -691328692, now seen corresponding path program 1 times [2024-09-20 13:30:36,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598072079] [2024-09-20 13:30:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598072079] [2024-09-20 13:30:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598072079] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:36,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:36,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 13:30:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219792059] [2024-09-20 13:30:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:36,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:36,878 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:36,966 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-09-20 13:30:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2024-09-20 13:30:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:36,967 INFO L225 Difference]: With dead ends: 79 [2024-09-20 13:30:36,967 INFO L226 Difference]: Without dead ends: 79 [2024-09-20 13:30:36,967 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:36,968 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:36,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-20 13:30:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2024-09-20 13:30:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 70 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) [2024-09-20 13:30:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2024-09-20 13:30:36,971 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 20 [2024-09-20 13:30:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:36,971 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2024-09-20 13:30:36,971 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2024-09-20 13:30:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:30:36,972 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:36,972 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:36,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-20 13:30:36,972 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:36,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash 43651191, now seen corresponding path program 1 times [2024-09-20 13:30:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:36,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745679454] [2024-09-20 13:30:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:37,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745679454] [2024-09-20 13:30:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745679454] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:37,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:37,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:30:37,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820126443] [2024-09-20 13:30:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:37,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:30:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:30:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:30:37,047 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:37,116 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-09-20 13:30:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:37,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2024-09-20 13:30:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:37,117 INFO L225 Difference]: With dead ends: 70 [2024-09-20 13:30:37,117 INFO L226 Difference]: Without dead ends: 70 [2024-09-20 13:30:37,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:37,119 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:37,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 96 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-20 13:30:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-09-20 13:30:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 68 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-09-20 13:30:37,121 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 21 [2024-09-20 13:30:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:37,122 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-09-20 13:30:37,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-09-20 13:30:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:30:37,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:37,124 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:37,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-20 13:30:37,124 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:37,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash -92060214, now seen corresponding path program 1 times [2024-09-20 13:30:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283969922] [2024-09-20 13:30:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283969922] [2024-09-20 13:30:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283969922] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334878305] [2024-09-20 13:30:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:37,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:37,380 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:30:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:37,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:30:37,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:37,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334878305] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:30:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 16 [2024-09-20 13:30:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959785602] [2024-09-20 13:30:38,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:38,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-09-20 13:30:38,418 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:38,515 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-09-20 13:30:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2024-09-20 13:30:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:38,516 INFO L225 Difference]: With dead ends: 70 [2024-09-20 13:30:38,516 INFO L226 Difference]: Without dead ends: 70 [2024-09-20 13:30:38,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-09-20 13:30:38,517 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:38,517 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 26 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-20 13:30:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-09-20 13:30:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2024-09-20 13:30:38,522 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 21 [2024-09-20 13:30:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:38,523 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2024-09-20 13:30:38,523 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2024-09-20 13:30:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:30:38,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:38,523 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:38,541 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:38,724 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:38,724 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:38,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -92056186, now seen corresponding path program 1 times [2024-09-20 13:30:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442953797] [2024-09-20 13:30:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442953797] [2024-09-20 13:30:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442953797] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245874719] [2024-09-20 13:30:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:38,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:38,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:38,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:38,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:30:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:38,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:30:38,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:39,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:30:39,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245874719] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:39,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:30:39,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 4] total 7 [2024-09-20 13:30:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220698682] [2024-09-20 13:30:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:39,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:30:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:30:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:30:39,080 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:39,113 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-09-20 13:30:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:30:39,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2024-09-20 13:30:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:39,114 INFO L225 Difference]: With dead ends: 69 [2024-09-20 13:30:39,114 INFO L226 Difference]: Without dead ends: 69 [2024-09-20 13:30:39,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:30:39,115 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:39,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-20 13:30:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-20 13:30:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 67 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-09-20 13:30:39,117 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 21 [2024-09-20 13:30:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:39,118 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-09-20 13:30:39,118 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-09-20 13:30:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 13:30:39,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:39,118 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:39,136 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:30:39,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-20 13:30:39,323 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:39,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1353191091, now seen corresponding path program 1 times [2024-09-20 13:30:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-09-20 13:30:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083638961] [2024-09-20 13:30:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083638961] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:39,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 13:30:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289292472] [2024-09-20 13:30:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:39,412 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:39,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:39,413 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:39,483 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2024-09-20 13:30:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2024-09-20 13:30:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:39,484 INFO L225 Difference]: With dead ends: 75 [2024-09-20 13:30:39,484 INFO L226 Difference]: Without dead ends: 75 [2024-09-20 13:30:39,484 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:39,485 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:39,485 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 94 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-20 13:30:39,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-09-20 13:30:39,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2024-09-20 13:30:39,487 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 22 [2024-09-20 13:30:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:39,487 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2024-09-20 13:30:39,487 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2024-09-20 13:30:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 13:30:39,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:39,487 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:39,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-20 13:30:39,488 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:39,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1000744962, now seen corresponding path program 1 times [2024-09-20 13:30:39,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275507204] [2024-09-20 13:30:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275507204] [2024-09-20 13:30:39,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275507204] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:39,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:39,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 13:30:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219330378] [2024-09-20 13:30:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:39,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:30:39,563 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:39,657 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-09-20 13:30:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2024-09-20 13:30:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:39,658 INFO L225 Difference]: With dead ends: 94 [2024-09-20 13:30:39,658 INFO L226 Difference]: Without dead ends: 94 [2024-09-20 13:30:39,659 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:39,660 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:39,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 150 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-20 13:30:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2024-09-20 13:30:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 67 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-09-20 13:30:39,663 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 23 [2024-09-20 13:30:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:39,663 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-09-20 13:30:39,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-09-20 13:30:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 13:30:39,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:39,664 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:39,664 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-20 13:30:39,664 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:39,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1728320030, now seen corresponding path program 1 times [2024-09-20 13:30:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566484541] [2024-09-20 13:30:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566484541] [2024-09-20 13:30:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566484541] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11721403] [2024-09-20 13:30:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:39,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:39,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:39,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:39,783 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:30:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:39,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 13:30:39,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:40,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11721403] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:40,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:30:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 13 [2024-09-20 13:30:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229041308] [2024-09-20 13:30:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:40,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:30:40,374 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:40,456 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-09-20 13:30:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:30:40,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2024-09-20 13:30:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:40,457 INFO L225 Difference]: With dead ends: 70 [2024-09-20 13:30:40,457 INFO L226 Difference]: Without dead ends: 70 [2024-09-20 13:30:40,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:30:40,458 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:40,458 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 27 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-20 13:30:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-09-20 13:30:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 66 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-09-20 13:30:40,460 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 23 [2024-09-20 13:30:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:40,460 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-09-20 13:30:40,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-09-20 13:30:40,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 13:30:40,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:40,461 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:40,477 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:40,665 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:40,666 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:40,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash 314120167, now seen corresponding path program 1 times [2024-09-20 13:30:40,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:40,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063138622] [2024-09-20 13:30:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:40,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063138622] [2024-09-20 13:30:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063138622] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61809931] [2024-09-20 13:30:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:40,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:40,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:40,850 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:30:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:40,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 13:30:40,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:41,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:41,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61809931] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:41,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:41,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 18 [2024-09-20 13:30:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449894595] [2024-09-20 13:30:41,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:41,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 13:30:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 13:30:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-09-20 13:30:41,629 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:41,863 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2024-09-20 13:30:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:30:41,863 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 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 26 [2024-09-20 13:30:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:41,864 INFO L225 Difference]: With dead ends: 80 [2024-09-20 13:30:41,864 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 13:30:41,864 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2024-09-20 13:30:41,865 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 204 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:41,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 108 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:30:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 13:30:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2024-09-20 13:30:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 59 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2024-09-20 13:30:41,868 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2024-09-20 13:30:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:41,868 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2024-09-20 13:30:41,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2024-09-20 13:30:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 13:30:41,868 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:41,868 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:41,886 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:30:42,069 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 13:30:42,069 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:42,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -755365588, now seen corresponding path program 1 times [2024-09-20 13:30:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939198030] [2024-09-20 13:30:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939198030] [2024-09-20 13:30:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939198030] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499692186] [2024-09-20 13:30:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:42,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:42,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:42,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:30:42,149 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:30:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:42,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:30:42,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:42,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499692186] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:42,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-09-20 13:30:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601735087] [2024-09-20 13:30:42,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:42,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:30:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:30:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:30:42,304 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:42,426 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-09-20 13:30:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:30:42,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 27 [2024-09-20 13:30:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:42,427 INFO L225 Difference]: With dead ends: 62 [2024-09-20 13:30:42,427 INFO L226 Difference]: Without dead ends: 58 [2024-09-20 13:30:42,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-20 13:30:42,428 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 131 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:42,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 120 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-20 13:30:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2024-09-20 13:30:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.148936170212766) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-09-20 13:30:42,431 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 27 [2024-09-20 13:30:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:42,431 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-09-20 13:30:42,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-09-20 13:30:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 13:30:42,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:42,432 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:42,449 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:42,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 13:30:42,632 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:42,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash -318657986, now seen corresponding path program 1 times [2024-09-20 13:30:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454096942] [2024-09-20 13:30:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454096942] [2024-09-20 13:30:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454096942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636498616] [2024-09-20 13:30:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:42,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:42,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:42,735 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) [2024-09-20 13:30:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:30:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:42,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:30:42,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:42,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636498616] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:42,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:42,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-09-20 13:30:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044698449] [2024-09-20 13:30:42,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:42,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:30:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:30:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:30:42,904 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:43,009 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-09-20 13:30:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:30:43,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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 [2024-09-20 13:30:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:43,010 INFO L225 Difference]: With dead ends: 56 [2024-09-20 13:30:43,010 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 13:30:43,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-20 13:30:43,012 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:43,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 13:30:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2024-09-20 13:30:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-09-20 13:30:43,013 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 29 [2024-09-20 13:30:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:43,014 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-09-20 13:30:43,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-09-20 13:30:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-20 13:30:43,014 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:43,014 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:43,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:43,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 13:30:43,215 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:43,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:43,215 INFO L85 PathProgramCache]: Analyzing trace with hash -350435060, now seen corresponding path program 1 times [2024-09-20 13:30:43,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:43,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142005171] [2024-09-20 13:30:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142005171] [2024-09-20 13:30:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142005171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496204063] [2024-09-20 13:30:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:43,292 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) [2024-09-20 13:30:43,293 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:30:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:43,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 13:30:43,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:43,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:43,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496204063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:43,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:43,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-09-20 13:30:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267125954] [2024-09-20 13:30:43,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:43,468 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:30:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:30:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:30:43,469 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 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) [2024-09-20 13:30:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:43,553 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-09-20 13:30:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:30:43,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 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 33 [2024-09-20 13:30:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:43,554 INFO L225 Difference]: With dead ends: 49 [2024-09-20 13:30:43,554 INFO L226 Difference]: Without dead ends: 49 [2024-09-20 13:30:43,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:30:43,555 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:43,555 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 37 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-20 13:30:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-09-20 13:30:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-09-20 13:30:43,556 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 33 [2024-09-20 13:30:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:43,557 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-09-20 13:30:43,557 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 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) [2024-09-20 13:30:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-09-20 13:30:43,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-20 13:30:43,558 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:43,559 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:43,576 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:43,759 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:43,759 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 16 more)] === [2024-09-20 13:30:43,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1760510349, now seen corresponding path program 1 times [2024-09-20 13:30:43,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:43,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692349202] [2024-09-20 13:30:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:43,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:43,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:43,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692349202] [2024-09-20 13:30:43,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692349202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:43,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250642360] [2024-09-20 13:30:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:43,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:43,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:43,845 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) [2024-09-20 13:30:43,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 13:30:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:43,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 13:30:43,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:43,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:30:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250642360] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:44,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:44,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-09-20 13:30:44,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475896701] [2024-09-20 13:30:44,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:44,047 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:30:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:30:44,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:30:44,048 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:44,131 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-09-20 13:30:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:30:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 35 [2024-09-20 13:30:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:44,131 INFO L225 Difference]: With dead ends: 47 [2024-09-20 13:30:44,131 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:30:44,132 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:30:44,133 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:44,134 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 30 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:30:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:30:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:30:44,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2024-09-20 13:30:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:44,135 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:30:44,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:30:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:30:44,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:30:44,139 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 19 remaining) [2024-09-20 13:30:44,139 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 19 remaining) [2024-09-20 13:30:44,139 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 19 remaining) [2024-09-20 13:30:44,139 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2024-09-20 13:30:44,139 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2024-09-20 13:30:44,140 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2024-09-20 13:30:44,141 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2024-09-20 13:30:44,141 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2024-09-20 13:30:44,141 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2024-09-20 13:30:44,160 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 13:30:44,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-20 13:30:44,344 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:44,346 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:30:44,348 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-20 13:30:44,348 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-20 13:30:44,349 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:44 BoogieIcfgContainer [2024-09-20 13:30:44,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:30:44,349 INFO L158 Benchmark]: Toolchain (without parser) took 12639.79ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 122.9MB in the beginning and 111.1MB in the end (delta: 11.9MB). Peak memory consumption was 140.6MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,350 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:30:44,350 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:30:44,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.18ms. Allocated memory is still 174.1MB. Free memory was 122.7MB in the beginning and 101.1MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.46ms. Allocated memory is still 174.1MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,351 INFO L158 Benchmark]: Boogie Preprocessor took 87.56ms. Allocated memory is still 174.1MB. Free memory was 99.0MB in the beginning and 143.8MB in the end (delta: -44.8MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,351 INFO L158 Benchmark]: RCFGBuilder took 578.04ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 125.7MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,355 INFO L158 Benchmark]: TraceAbstraction took 11530.24ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 124.6MB in the beginning and 111.1MB in the end (delta: 13.6MB). Peak memory consumption was 143.6MB. Max. memory is 16.1GB. [2024-09-20 13:30:44,356 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.18ms. Allocated memory is still 174.1MB. Free memory was 122.7MB in the beginning and 101.1MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.46ms. Allocated memory is still 174.1MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.56ms. Allocated memory is still 174.1MB. Free memory was 99.0MB in the beginning and 143.8MB in the end (delta: -44.8MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * RCFGBuilder took 578.04ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 125.7MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11530.24ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 124.6MB in the beginning and 111.1MB in the end (delta: 13.6MB). Peak memory consumption was 143.6MB. 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: 30]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 38]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 47]: 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: 59]: 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: 76]: 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: 88]: 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: 100]: 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: 112]: 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: 141]: 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: 153]: 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: 165]: 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: 177]: 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: 193]: 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: 205]: 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: 217]: 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: 229]: 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: 245]: 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: 257]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 29, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1678 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1678 mSDsluCounter, 2444 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1511 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2315 IncrementalHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 933 mSDtfsCounter, 2315 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 624 GetRequests, 436 SyntacticMatches, 5 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=8, InterpolantAutomatonStates: 156, 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, 29 MinimizatonAttempts, 246 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 756 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 939 ConstructedInterpolants, 0 QuantifiedInterpolants, 7487 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1030 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 47 InterpolantComputations, 24 PerfectInterpolantSequences, 69/187 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:30:44,386 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...