This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:46:21,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:46:21,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:46:21,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:46:21,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:46:21,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:46:21,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:46:21,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:46:21,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:46:21,632 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:46:21,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:46:21,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:46:21,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:46:21,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:46:21,634 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:46:21,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:46:21,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:46:21,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:46:21,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:46:21,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:46:21,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:46:21,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:46:21,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:46:21,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:46:21,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:46:21,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:46:21,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:46:21,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:46:21,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:46:21,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:46:21,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:46:21,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:46:21,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:46:21,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:46:21,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:46:21,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:46:21,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:46:21,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:46:21,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:46:21,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:46:21,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:46:21,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:46:21,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:46:21,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:46:21,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:46:21,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:46:21,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:46:21,922 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:46:21,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_vardep_2.c [2024-09-20 13:46:23,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:46:23,446 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:46:23,446 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_vardep_2.c [2024-09-20 13:46:23,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/33d286ba8/77f454ce34b2431ba843eecf097abf90/FLAG2360a1539 [2024-09-20 13:46:23,464 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/33d286ba8/77f454ce34b2431ba843eecf097abf90 [2024-09-20 13:46:23,466 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:46:23,468 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:46:23,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_simple_vardep_2.yml/witness-2.1.yml [2024-09-20 13:46:23,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:46:23,515 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:46:23,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:46:23,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:46:23,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:46:23,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:23" (1/2) ... [2024-09-20 13:46:23,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6020836d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:23, skipping insertion in model container [2024-09-20 13:46:23,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:46:23" (1/2) ... [2024-09-20 13:46:23,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ac6339f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:46:23, skipping insertion in model container [2024-09-20 13:46:23,526 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 01:46:23" (2/2) ... [2024-09-20 13:46:23,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6020836d and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:46:23, skipping insertion in model container [2024-09-20 13:46:23,526 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 01:46:23" (2/2) ... [2024-09-20 13:46:23,531 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:46:23,534 INFO L1541 ArrayList]: Function contract at [L20]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-20 13:46:23,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:46:23,691 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/recursified_loop-crafted/recursified_simple_vardep_2.c[1113,1126] [2024-09-20 13:46:23,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:46:23,714 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-20 13:46:23,755 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/recursified_loop-crafted/recursified_simple_vardep_2.c[1113,1126] [2024-09-20 13:46:23,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:46:23,779 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:46:23,780 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:46:23 WrapperNode [2024-09-20 13:46:23,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:46:23,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:46:23,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:46:23,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:46:23,788 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,796 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,816 INFO L138 Inliner]: procedures = 14, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-09-20 13:46:23,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:46:23,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:46:23,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:46:23,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:46:23,828 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,828 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,834 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,851 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 5, 4]. 31 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 1, 1]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-09-20 13:46:23,852 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,852 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,861 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,863 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,864 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,868 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:46:23,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:46:23,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:46:23,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:46:23,873 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 01:46:23" (1/1) ... [2024-09-20 13:46:23,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:46:23,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:46:23,902 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 13:46:23,908 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 13:46:23,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 13:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-20 13:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-20 13:46:23,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:46:23,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 13:46:23,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-20 13:46:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-20 13:46:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-20 13:46:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_24_0 [2024-09-20 13:46:23,956 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_24_0 [2024-09-20 13:46:23,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 13:46:24,028 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:46:24,031 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:46:24,200 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-20 13:46:24,200 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:46:24,241 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:46:24,241 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:46:24,242 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:46:24 BoogieIcfgContainer [2024-09-20 13:46:24,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:46:24,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:46:24,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:46:24,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:46:24,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:46:23" (1/4) ... [2024-09-20 13:46:24,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4714b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:46:24, skipping insertion in model container [2024-09-20 13:46:24,259 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 01:46:23" (2/4) ... [2024-09-20 13:46:24,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4714b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:46:24, skipping insertion in model container [2024-09-20 13:46:24,260 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 01:46:23" (3/4) ... [2024-09-20 13:46:24,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db4714b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:46:24, skipping insertion in model container [2024-09-20 13:46:24,260 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 01:46:24" (4/4) ... [2024-09-20 13:46:24,261 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_vardep_2.c [2024-09-20 13:46:24,278 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:46:24,279 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-20 13:46:24,321 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:46:24,328 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;@620129e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:46:24,328 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-20 13:46:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:46:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-20 13:46:24,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:46:24,344 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:46:24,345 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION === [func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION, func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-20 13:46:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:46:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1458898833, now seen corresponding path program 1 times [2024-09-20 13:46:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:46:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887696985] [2024-09-20 13:46:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:46:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:25,213 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 13:46:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:46:25,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887696985] [2024-09-20 13:46:25,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887696985] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:46:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:46:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:46:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220794259] [2024-09-20 13:46:25,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:46:25,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:46:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:46:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:46:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:46:25,256 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:46:25,362 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-09-20 13:46:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:46:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-20 13:46:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:46:25,370 INFO L225 Difference]: With dead ends: 24 [2024-09-20 13:46:25,370 INFO L226 Difference]: Without dead ends: 17 [2024-09-20 13:46:25,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:46:25,375 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:46:25,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 63 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:46:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-20 13:46:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-20 13:46:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-20 13:46:25,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2024-09-20 13:46:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:46:25,404 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-20 13:46:25,404 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-20 13:46:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-20 13:46:25,405 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:46:25,405 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:46:25,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:46:25,405 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION === [func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION, func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-20 13:46:25,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:46:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1458896911, now seen corresponding path program 1 times [2024-09-20 13:46:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:46:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468155789] [2024-09-20 13:46:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:46:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:26,093 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 13:46:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:46:26,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468155789] [2024-09-20 13:46:26,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468155789] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:46:26,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:46:26,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 13:46:26,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918059140] [2024-09-20 13:46:26,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:46:26,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:46:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:46:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:46:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:46:26,097 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:46:26,220 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-20 13:46:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:46:26,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-20 13:46:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:46:26,222 INFO L225 Difference]: With dead ends: 22 [2024-09-20 13:46:26,222 INFO L226 Difference]: Without dead ends: 22 [2024-09-20 13:46:26,223 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:46:26,224 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:46:26,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:46:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-20 13:46:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-09-20 13:46:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-20 13:46:26,231 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2024-09-20 13:46:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:46:26,232 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-20 13:46:26,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-20 13:46:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-20 13:46:26,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:46:26,234 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:46:26,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:46:26,234 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION, func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-20 13:46:26,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:46:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1840594674, now seen corresponding path program 1 times [2024-09-20 13:46:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:46:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916495021] [2024-09-20 13:46:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:46:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:26,291 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 13:46:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:46:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916495021] [2024-09-20 13:46:26,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916495021] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:46:26,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:46:26,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:46:26,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405799414] [2024-09-20 13:46:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:46:26,294 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:46:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:46:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:46:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:46:26,295 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:46:26,304 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2024-09-20 13:46:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:46:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-20 13:46:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:46:26,306 INFO L225 Difference]: With dead ends: 16 [2024-09-20 13:46:26,307 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 13:46:26,307 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 13:46:26,308 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:46:26,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:46:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 13:46:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 13:46:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-20 13:46:26,314 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2024-09-20 13:46:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:46:26,315 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-20 13:46:26,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-20 13:46:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:46:26,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:46:26,316 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:46:26,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 13:46:26,317 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION === [func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION, func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-20 13:46:26,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:46:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash 341578714, now seen corresponding path program 1 times [2024-09-20 13:46:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:46:26,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874756010] [2024-09-20 13:46:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:26,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:46:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:46:27,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:46:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874756010] [2024-09-20 13:46:27,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874756010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:46:27,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903246878] [2024-09-20 13:46:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:27,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:46:27,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:46:27,037 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 13:46:27,041 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 13:46:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:27,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 13:46:27,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:46:27,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:27,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:46:27,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:46:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 13:46:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903246878] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:46:27,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:46:27,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 15 [2024-09-20 13:46:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991341659] [2024-09-20 13:46:27,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:46:27,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 13:46:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:46:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 13:46:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-20 13:46:27,858 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:46:28,043 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-09-20 13:46:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:46:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 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 13:46:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:46:28,044 INFO L225 Difference]: With dead ends: 21 [2024-09-20 13:46:28,044 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 13:46:28,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-09-20 13:46:28,045 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:46:28,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:46:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 13:46:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2024-09-20 13:46:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-09-20 13:46:28,048 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2024-09-20 13:46:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:46:28,049 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-09-20 13:46:28,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-09-20 13:46:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:46:28,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:46:28,050 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:46:28,068 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:46:28,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:46:28,251 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION === [func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION, func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-20 13:46:28,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:46:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash 341576792, now seen corresponding path program 1 times [2024-09-20 13:46:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:46:28,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088129078] [2024-09-20 13:46:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:28,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:46:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:46:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:46:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088129078] [2024-09-20 13:46:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088129078] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:46:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094575288] [2024-09-20 13:46:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:46:29,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:46:29,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:46:29,140 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 13:46:29,142 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 13:46:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:46:29,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-20 13:46:29,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:46:29,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:29,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:29,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:29,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:46:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:46:29,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:46:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:46:29,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094575288] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:46:29,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:46:29,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 17 [2024-09-20 13:46:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77666888] [2024-09-20 13:46:29,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:46:29,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 13:46:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:46:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 13:46:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-09-20 13:46:29,903 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 19 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:46:30,506 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2024-09-20 13:46:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 13:46:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 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 13:46:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:46:30,506 INFO L225 Difference]: With dead ends: 26 [2024-09-20 13:46:30,506 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:46:30,507 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 13:46:30,508 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:46:30,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 29 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:46:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:46:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:46:30,509 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 13:46:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:46:30,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-09-20 13:46:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:46:30,510 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:46:30,510 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 13 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:46:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:46:30,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:46:30,514 INFO L785 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_24_0Err0ASSERT_VIOLATIONPRE_CONDITION (2 of 3 remaining) [2024-09-20 13:46:30,515 INFO L785 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_24_0Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-09-20 13:46:30,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_24_0Err2ASSERT_VIOLATIONPOST_CONDITION (0 of 3 remaining) [2024-09-20 13:46:30,533 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:46:30,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:46:30,719 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-20 13:46:30,721 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:46:30,723 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:46:30 BoogieIcfgContainer [2024-09-20 13:46:30,723 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:46:30,723 INFO L158 Benchmark]: Toolchain (without parser) took 7208.51ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 87.5MB in the beginning and 182.7MB in the end (delta: -95.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:46:30,724 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:46:30,724 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 89.6MB in the beginning and 89.3MB in the end (delta: 350.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:46:30,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.90ms. Allocated memory is still 144.7MB. Free memory was 87.5MB in the beginning and 74.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:46:30,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.08ms. Allocated memory is still 144.7MB. Free memory was 74.5MB in the beginning and 72.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:46:30,725 INFO L158 Benchmark]: Boogie Preprocessor took 51.52ms. Allocated memory is still 144.7MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:46:30,725 INFO L158 Benchmark]: RCFGBuilder took 371.72ms. Allocated memory is still 144.7MB. Free memory was 70.8MB in the beginning and 113.5MB in the end (delta: -42.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2024-09-20 13:46:30,725 INFO L158 Benchmark]: TraceAbstraction took 6479.31ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 112.8MB in the beginning and 182.7MB in the end (delta: -69.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-09-20 13:46:30,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 89.6MB in the beginning and 89.3MB in the end (delta: 350.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.90ms. Allocated memory is still 144.7MB. Free memory was 87.5MB in the beginning and 74.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.08ms. Allocated memory is still 144.7MB. Free memory was 74.5MB in the beginning and 72.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.52ms. Allocated memory is still 144.7MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.72ms. Allocated memory is still 144.7MB. Free memory was 70.8MB in the beginning and 113.5MB in the end (delta: -42.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6479.31ms. Allocated memory was 144.7MB in the beginning and 220.2MB in the end (delta: 75.5MB). Free memory was 112.8MB in the beginning and 182.7MB in the end (delta: -69.9MB). Peak memory consumption was 6.6MB. 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: 20]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 26]: 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: 20]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 300 IncrementalHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 43 mSDtfsCounter, 300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 1845 SizeOfPredicates, 38 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 11/30 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:46:30,751 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...