This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:28:45,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:28:45,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:28:45,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:28:45,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:28:45,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:28:45,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:28:45,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:28:45,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:28:45,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:28:45,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:28:45,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:28:45,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:28:45,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:28:45,285 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:28:45,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:28:45,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:28:45,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:28:45,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:28:45,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:28:45,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:28:45,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:28:45,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:28:45,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:28:45,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:28:45,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:28:45,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:28:45,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:28:45,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:28:45,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:28:45,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:28:45,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:28:45,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:45,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:28:45,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:28:45,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:28:45,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:28:45,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:28:45,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:28:45,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:28:45,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:28:45,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:28:45,295 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:28:45,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:28:45,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:28:45,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:28:45,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:28:45,561 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:28:45,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 10:28:46,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:28:47,170 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:28:47,171 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 10:28:47,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3f25a9009/fae3546d4d6c489f94be0c804f13c79e/FLAGc312af5e5 [2024-09-13 10:28:47,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3f25a9009/fae3546d4d6c489f94be0c804f13c79e [2024-09-13 10:28:47,198 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:28:47,200 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:28:47,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml [2024-09-13 10:28:47,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:28:47,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:28:47,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:47,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:28:47,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:28:47,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:47" (1/2) ... [2024-09-13 10:28:47,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fefce0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:47" (1/2) ... [2024-09-13 10:28:47,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f2644f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:47" (2/2) ... [2024-09-13 10:28:47,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fefce0a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:47" (2/2) ... [2024-09-13 10:28:47,265 INFO L90 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-09-13 10:28:47,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:28:47,424 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-13 10:28:47,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:47,437 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 10:28:47,453 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-13 10:28:47,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:47,476 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:28:47,477 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47 WrapperNode [2024-09-13 10:28:47,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:47,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:47,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:28:47,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:28:47,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,508 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-09-13 10:28:47,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:47,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:28:47,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:28:47,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:28:47,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,534 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-09-13 10:28:47,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:28:47,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:28:47,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:28:47,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:28:47,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (1/1) ... [2024-09-13 10:28:47,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:47,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:47,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:28:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:28:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:28:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 10:28:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 10:28:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 10:28:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:28:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:28:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 10:28:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 10:28:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 10:28:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 10:28:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 10:28:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 10:28:47,694 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:28:47,695 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:28:47,811 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-13 10:28:47,811 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:28:47,859 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:28:47,860 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:28:47,860 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:47 BoogieIcfgContainer [2024-09-13 10:28:47,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:28:47,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:28:47,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:28:47,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:28:47,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:28:47" (1/4) ... [2024-09-13 10:28:47,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637c1a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:47" (2/4) ... [2024-09-13 10:28:47,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637c1a88 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:47" (3/4) ... [2024-09-13 10:28:47,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637c1a88 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:47, skipping insertion in model container [2024-09-13 10:28:47,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:47" (4/4) ... [2024-09-13 10:28:47,880 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-13 10:28:47,895 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:28:47,895 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 10:28:47,940 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:28:47,948 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;@5df35dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:28:47,948 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 10:28:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:28:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 10:28:47,960 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:47,961 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:47,961 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:47,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 855928239, now seen corresponding path program 1 times [2024-09-13 10:28:47,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:47,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907020078] [2024-09-13 10:28:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:47,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:48,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:48,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907020078] [2024-09-13 10:28:48,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907020078] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:48,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:48,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 10:28:48,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801689392] [2024-09-13 10:28:48,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:48,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:28:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:48,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:28:48,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:28:48,595 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 10:28:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:48,721 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-09-13 10:28:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:28:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-13 10:28:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:48,731 INFO L225 Difference]: With dead ends: 25 [2024-09-13 10:28:48,732 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 10:28:48,733 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 10:28:48,737 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:48,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 10:28:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-13 10:28:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 10:28:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-13 10:28:48,771 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2024-09-13 10:28:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:48,771 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-13 10:28:48,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 10:28:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-13 10:28:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 10:28:48,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:48,773 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:48,773 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:28:48,774 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:48,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 255373073, now seen corresponding path program 1 times [2024-09-13 10:28:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111186711] [2024-09-13 10:28:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:48,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:48,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 10:28:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:28:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:49,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111186711] [2024-09-13 10:28:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111186711] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:49,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:49,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 10:28:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082654445] [2024-09-13 10:28:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:49,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:28:49,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:28:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:28:49,052 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:49,134 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-09-13 10:28:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:28:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-09-13 10:28:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:49,136 INFO L225 Difference]: With dead ends: 23 [2024-09-13 10:28:49,136 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 10:28:49,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:28:49,138 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:49,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 10:28:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 10:28:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 10:28:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-13 10:28:49,146 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 21 [2024-09-13 10:28:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:49,147 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-13 10:28:49,147 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-13 10:28:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 10:28:49,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:49,149 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:49,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:28:49,149 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:49,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1037516303, now seen corresponding path program 1 times [2024-09-13 10:28:49,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978888724] [2024-09-13 10:28:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:49,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 10:28:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 10:28:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:49,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978888724] [2024-09-13 10:28:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978888724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194241365] [2024-09-13 10:28:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:49,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:49,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:49,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:49,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:28:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 10:28:49,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:49,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:28:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:28:50,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:28:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194241365] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:50,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-13 10:28:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913436013] [2024-09-13 10:28:50,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:50,642 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 10:28:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 10:28:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:50,646 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 10:28:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:50,973 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-13 10:28:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:50,974 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) Word has length 26 [2024-09-13 10:28:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:50,974 INFO L225 Difference]: With dead ends: 27 [2024-09-13 10:28:50,975 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 10:28:50,976 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 10:28:50,977 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:50,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 99 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 10:28:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 10:28:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 10:28:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 10:28:50,985 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 26 [2024-09-13 10:28:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:50,985 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 10:28:50,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 10:28:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 10:28:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-13 10:28:50,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:50,987 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:51,004 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 10:28:51,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:51,188 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:51,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1013053495, now seen corresponding path program 2 times [2024-09-13 10:28:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922868925] [2024-09-13 10:28:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 10:28:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 10:28:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-13 10:28:51,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922868925] [2024-09-13 10:28:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922868925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443607443] [2024-09-13 10:28:51,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:51,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:51,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:51,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:28:52,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:28:52,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:52,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 10:28:52,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:52,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:28:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 10:28:52,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 10:28:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443607443] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:53,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:53,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 14] total 25 [2024-09-13 10:28:53,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926630399] [2024-09-13 10:28:53,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:53,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 10:28:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 10:28:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:53,516 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 10:28:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:53,685 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-13 10:28:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 10:28:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 52 [2024-09-13 10:28:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:53,686 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:28:53,686 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 10:28:53,687 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-09-13 10:28:53,688 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:53,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 10:28:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 10:28:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 10:28:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-13 10:28:53,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 52 [2024-09-13 10:28:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:53,694 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-13 10:28:53,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 10:28:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-13 10:28:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-13 10:28:53,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:53,697 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:53,719 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 10:28:53,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:53,902 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:53,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1464884653, now seen corresponding path program 3 times [2024-09-13 10:28:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493993588] [2024-09-13 10:28:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:28:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:28:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-13 10:28:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493993588] [2024-09-13 10:28:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493993588] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683904944] [2024-09-13 10:28:54,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:28:54,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:54,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:54,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:28:54,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 10:28:54,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:54,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-13 10:28:54,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:54,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:28:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-13 10:28:55,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-09-13 10:28:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683904944] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:55,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 34 [2024-09-13 10:28:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042301978] [2024-09-13 10:28:55,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:55,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 10:28:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 10:28:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 10:28:55,911 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 10:28:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:56,223 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-13 10:28:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 10:28:56,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) Word has length 62 [2024-09-13 10:28:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:56,225 INFO L225 Difference]: With dead ends: 33 [2024-09-13 10:28:56,225 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 10:28:56,226 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 10:28:56,227 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:56,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 109 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 10:28:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 10:28:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (11), 9 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-13 10:28:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-13 10:28:56,233 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 62 [2024-09-13 10:28:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:56,234 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-13 10:28:56,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 10:28:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-13 10:28:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-13 10:28:56,236 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:56,236 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:56,249 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 10:28:56,437 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:56,437 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:28:56,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash -365015879, now seen corresponding path program 4 times [2024-09-13 10:28:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764303097] [2024-09-13 10:28:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:56,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:28:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:28:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:28:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 212 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-13 10:28:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764303097] [2024-09-13 10:28:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764303097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:57,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103359192] [2024-09-13 10:28:57,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 10:28:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:57,884 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:57,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:28:58,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 10:28:58,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:58,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-13 10:28:58,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:58,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:28:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-13 10:28:58,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 127 proven. 165 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-09-13 10:29:00,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103359192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:29:00,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:29:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 22] total 35 [2024-09-13 10:29:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945247765] [2024-09-13 10:29:00,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:00,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 10:29:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 10:29:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 10:29:00,522 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 10:29:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:00,694 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-13 10:29:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 10:29:00,695 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 103 [2024-09-13 10:29:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:00,696 INFO L225 Difference]: With dead ends: 35 [2024-09-13 10:29:00,696 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 10:29:00,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 10:29:00,697 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:00,697 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:29:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 10:29:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-13 10:29:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 10:29:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-13 10:29:00,702 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 103 [2024-09-13 10:29:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:00,702 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-13 10:29:00,702 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 10:29:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-13 10:29:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-13 10:29:00,703 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:00,704 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:00,717 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 10:29:00,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:00,904 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 620375637, now seen corresponding path program 5 times [2024-09-13 10:29:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720845559] [2024-09-13 10:29:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:01,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:29:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:29:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:29:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 307 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-09-13 10:29:02,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720845559] [2024-09-13 10:29:02,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720845559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:02,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992563457] [2024-09-13 10:29:02,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 10:29:02,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:02,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:02,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:02,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:29:02,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-13 10:29:02,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:29:02,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-13 10:29:02,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:29:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-13 10:29:03,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-13 10:29:05,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992563457] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:29:05,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:29:05,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 26] total 39 [2024-09-13 10:29:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226225056] [2024-09-13 10:29:05,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:05,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-13 10:29:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-13 10:29:05,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 10:29:05,573 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-13 10:29:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:05,739 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-09-13 10:29:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 10:29:05,741 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 118 [2024-09-13 10:29:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:05,743 INFO L225 Difference]: With dead ends: 37 [2024-09-13 10:29:05,743 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 10:29:05,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 249 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1393, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 10:29:05,744 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:05,745 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:29:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 10:29:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 10:29:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 11 states have return successors, (13), 11 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 10:29:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-09-13 10:29:05,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 118 [2024-09-13 10:29:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:05,756 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-09-13 10:29:05,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-13 10:29:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-09-13 10:29:05,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-13 10:29:05,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:05,757 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:05,777 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 10:29:05,958 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 10:29:05,958 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:05,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -149039543, now seen corresponding path program 6 times [2024-09-13 10:29:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:05,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049634285] [2024-09-13 10:29:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:06,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-13 10:29:07,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049634285] [2024-09-13 10:29:07,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049634285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500710085] [2024-09-13 10:29:07,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 10:29:07,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:07,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:07,575 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 10:29:07,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-13 10:29:07,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:29:07,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 10:29:07,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:07,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:29:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-13 10:29:08,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-13 10:29:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500710085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:29:09,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:29:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 18] total 37 [2024-09-13 10:29:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298335614] [2024-09-13 10:29:09,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:09,356 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 10:29:09,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 10:29:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 10:29:09,358 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-13 10:29:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:09,585 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-09-13 10:29:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 10:29:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) Word has length 133 [2024-09-13 10:29:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:09,587 INFO L225 Difference]: With dead ends: 40 [2024-09-13 10:29:09,587 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 10:29:09,587 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 10:29:09,588 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:09,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:29:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 10:29:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-09-13 10:29:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-13 10:29:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-13 10:29:09,597 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 133 [2024-09-13 10:29:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:09,597 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-13 10:29:09,598 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-13 10:29:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-13 10:29:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-13 10:29:09,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:09,602 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:09,621 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 10:29:09,802 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:09,803 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1739371329, now seen corresponding path program 7 times [2024-09-13 10:29:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865451800] [2024-09-13 10:29:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:10,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:11,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-09-13 10:29:12,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865451800] [2024-09-13 10:29:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865451800] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661491165] [2024-09-13 10:29:12,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 10:29:12,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:12,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:12,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:12,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 10:29:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:12,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 10:29:12,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:12,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:29:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-09-13 10:29:13,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-09-13 10:29:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661491165] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:29:15,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:29:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 22] total 49 [2024-09-13 10:29:15,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992359868] [2024-09-13 10:29:15,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:15,150 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-13 10:29:15,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-13 10:29:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 10:29:15,156 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-13 10:29:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:15,548 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-09-13 10:29:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 10:29:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) Word has length 174 [2024-09-13 10:29:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:15,550 INFO L225 Difference]: With dead ends: 46 [2024-09-13 10:29:15,550 INFO L226 Difference]: Without dead ends: 46 [2024-09-13 10:29:15,551 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=621, Invalid=2571, Unknown=0, NotChecked=0, Total=3192 [2024-09-13 10:29:15,552 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:15,552 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 61 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:29:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-13 10:29:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-13 10:29:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (17), 15 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-13 10:29:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-13 10:29:15,560 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 174 [2024-09-13 10:29:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:15,560 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-13 10:29:15,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-13 10:29:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-13 10:29:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-09-13 10:29:15,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:15,563 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:15,581 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 10:29:15,763 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:15,764 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:15,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1394733523, now seen corresponding path program 1 times [2024-09-13 10:29:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:15,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225093830] [2024-09-13 10:29:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:16,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:18,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 2854 trivial. 0 not checked. [2024-09-13 10:29:19,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225093830] [2024-09-13 10:29:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225093830] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331352433] [2024-09-13 10:29:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:19,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:19,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:19,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 10:29:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:19,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-13 10:29:19,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:19,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 10:29:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2870 trivial. 0 not checked. [2024-09-13 10:29:20,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2024-09-13 10:29:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331352433] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:29:22,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:29:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 26] total 46 [2024-09-13 10:29:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452312689] [2024-09-13 10:29:22,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:22,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-13 10:29:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-13 10:29:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 10:29:22,885 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-13 10:29:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:23,191 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-13 10:29:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 10:29:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) Word has length 215 [2024-09-13 10:29:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:23,194 INFO L225 Difference]: With dead ends: 43 [2024-09-13 10:29:23,194 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:29:23,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 478 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=577, Invalid=2179, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 10:29:23,195 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:23,195 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 165 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:29:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:29:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 10:29:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-13 10:29:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-13 10:29:23,202 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 215 [2024-09-13 10:29:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:23,203 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-13 10:29:23,203 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-13 10:29:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-13 10:29:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-13 10:29:23,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:23,207 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:23,227 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 10:29:23,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:23,408 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:23,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1043833273, now seen corresponding path program 8 times [2024-09-13 10:29:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:23,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399811636] [2024-09-13 10:29:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:23,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:24,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:25,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:26,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 937 proven. 34 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2024-09-13 10:29:27,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399811636] [2024-09-13 10:29:27,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399811636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:27,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035550661] [2024-09-13 10:29:27,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:29:27,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:27,653 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 10:29:28,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:29:28,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:29:28,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-13 10:29:28,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:28,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 10:29:28,387 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 [2024-09-13 10:29:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-09-13 10:29:28,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:29,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 21 [2024-09-13 10:29:29,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 21 [2024-09-13 10:29:30,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 21 [2024-09-13 10:29:30,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 21 [2024-09-13 10:29:30,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 21 [2024-09-13 10:29:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035550661] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:31,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:29:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 23 [2024-09-13 10:29:31,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786954808] [2024-09-13 10:29:31,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:31,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 10:29:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 10:29:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2024-09-13 10:29:31,471 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 10:29:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:31,914 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-09-13 10:29:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 10:29:31,915 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 256 [2024-09-13 10:29:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:31,916 INFO L225 Difference]: With dead ends: 46 [2024-09-13 10:29:31,916 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 10:29:31,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 10:29:31,917 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:31,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 202 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:29:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 10:29:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-13 10:29:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-13 10:29:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-09-13 10:29:31,922 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 256 [2024-09-13 10:29:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:31,922 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-09-13 10:29:31,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 10:29:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-09-13 10:29:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-13 10:29:31,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:29:31,924 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:29:31,942 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 10:29:32,128 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 10:29:32,128 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 10:29:32,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:29:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1043831351, now seen corresponding path program 2 times [2024-09-13 10:29:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:29:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176929141] [2024-09-13 10:29:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:29:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:29:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:32,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:29:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:33,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:29:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:29:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:29:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-13 10:29:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:29:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176929141] [2024-09-13 10:29:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176929141] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316387450] [2024-09-13 10:29:34,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:29:34,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:29:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:29:34,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:29:34,479 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 10:29:34,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:29:34,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:29:34,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 10:29:34,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:29:35,044 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 36 treesize of output 13 [2024-09-13 10:29:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-13 10:29:35,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:29:36,083 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 10:29:36,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 10:29:36,463 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 10:29:36,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 10:29:36,770 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 10:29:36,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 10:29:36,974 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 10:29:36,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 10:29:37,129 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 10:29:37,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 10:29:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316387450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:29:37,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:29:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-13 10:29:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879040832] [2024-09-13 10:29:37,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 10:29:37,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 10:29:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:29:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 10:29:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-13 10:29:37,436 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 10:29:41,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 10:29:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:29:41,714 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-13 10:29:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:29:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 256 [2024-09-13 10:29:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:29:41,716 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:29:41,716 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:29:41,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2024-09-13 10:29:41,717 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:29:41,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 28 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 4.1s Time] [2024-09-13 10:29:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:29:41,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:29:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:29:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:29:41,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 256 [2024-09-13 10:29:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:29:41,718 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:29:41,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 10:29:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:29:41,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:29:41,723 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 10:29:41,743 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 10:29:41,924 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 10:29:41,927 INFO L408 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1] [2024-09-13 10:29:41,929 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:29:41,931 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:29:41 BoogieIcfgContainer [2024-09-13 10:29:41,931 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:29:41,934 INFO L158 Benchmark]: Toolchain (without parser) took 54684.24ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 89.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,934 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 146.8MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:29:41,934 INFO L158 Benchmark]: Witness Parser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:29:41,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.78ms. Allocated memory is still 146.8MB. Free memory was 89.2MB in the beginning and 77.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.08ms. Allocated memory is still 146.8MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,937 INFO L158 Benchmark]: Boogie Preprocessor took 36.23ms. Allocated memory is still 146.8MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,937 INFO L158 Benchmark]: RCFGBuilder took 313.80ms. Allocated memory is still 146.8MB. Free memory was 74.5MB in the beginning and 116.4MB in the end (delta: -41.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,937 INFO L158 Benchmark]: TraceAbstraction took 54069.08ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 115.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2024-09-13 10:29:41,938 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 146.8MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.78ms. Allocated memory is still 146.8MB. Free memory was 89.2MB in the beginning and 77.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.08ms. Allocated memory is still 146.8MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.23ms. Allocated memory is still 146.8MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.80ms. Allocated memory is still 146.8MB. Free memory was 74.5MB in the beginning and 116.4MB in the end (delta: -41.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 54069.08ms. Allocated memory was 146.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 115.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: 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 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.0s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 1329 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1186 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2382 IncrementalHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 143 mSDtfsCounter, 2382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3070 GetRequests, 2646 SyntacticMatches, 22 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5592 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=9, InterpolantAutomatonStates: 154, 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, 12 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 41.9s InterpolantComputationTime, 2821 NumberOfCodeBlocks, 2729 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3674 ConstructedInterpolants, 34 QuantifiedInterpolants, 13922 SizeOfPredicates, 132 NumberOfNonLiveVariables, 5536 ConjunctsInSsa, 687 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 36871/38647 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:29:41,975 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...